Prof. Peter Barlis

Professor Peter Barlis (MBBS, MPH, PhD, FESC, FACC, FSCAI, FRACP) is an Interventional Cardiologist and the founding editor of Heart Matters. With expertise in coronary artery disease, advanced cardiac imaging, and interventional cardiology — and fellowships of the European Society of Cardiology, the American College of Cardiology, and the Royal Australasian College of Physicians — he brings the highest level of clinical authority to everything published on this site. Heart Matters was founded on Professor Barlis's belief that patients who understand their condition are less frightened and better equipped to make decisions about their care. Every article on this site reflects that commitment.

Understanding Dizziness: A Cardiologist’s Guide

June 2, 2026

Dizziness means something different to almost everyone who uses the word, and that description is what points to the cause. A cardiologist explains the four types, what causes each, and when your heart is involved.

What is a Muscle Bridge?

June 2, 2026May 31, 2026

Key Points

A myocardial bridge, often just called a muscle bridge, is a common and usually harmless variant present from birth, where a short stretch of a coronary artery dips down and runs through the heart muscle instead of sitting on the surface. Most people who have one will never know and never need treatment.
In a minority of people, a bridge can cause genuine symptoms, most often chest pain or tightness brought on by exertion or stress. These patients deserve to be taken seriously rather than reassured by default.
A standard angiogram often underestimates a bridge. Confirming whether a bridge is actually causing symptoms usually needs more detailed assessment, including intravascular ultrasound and specialised stress testing.
Most symptomatic bridges are managed well with medication, usually beta-blockers or calcium channel blockers. A small, carefully selected group with severe, persistent symptoms may benefit from an operation called surgical unroofing.
A large 2026 study from Stanford, published in the European Heart Journal, found that for this selected group, surgical unroofing produced lasting relief from angina five years later, with a low complication rate.

You have a muscle bridge. Many people hear that sentence for the first time lying on an angiogram table, nod along, and leave none the wiser. It is rarely explained in much depth, partly because for most people it carries no consequence at all, and partly because the few it does affect need a longer conversation than a results appointment allows.

A myocardial bridge is one of the most common variations in human heart anatomy. The overwhelming majority cause no symptoms, need no treatment, and carry no meaningful risk. For a smaller group of people, though, a bridge can be a real and treatable cause of angina, and telling those two groups apart is what good assessment is for.

This article explains what a muscle bridge actually is, why most are harmless, how the troublesome minority are identified, and what the newest evidence says about treating them.

What a Myocardial Bridge Actually Is

The coronary arteries, the vessels that supply blood to the heart muscle itself, normally run along the outer surface of the heart, sitting on top like rivers on a landscape. A myocardial bridge is a stretch where one of these arteries takes a short detour and tunnels down through the heart muscle before surfacing again on the other side.

The band of muscle lying over the tunnelled segment is the “bridge.” The buried portion of artery is sometimes called the tunnelled segment. It is present from birth, which means a bridge is a variation in how the heart formed rather than something that develops, wears in, or is caused by lifestyle. Around 97% of bridges occur in the same vessel, the left anterior descending artery, which runs down the front of the heart.

Diagram comparing a normal coronary artery running along the heart surface with a myocardial bridge, where the artery dips down through the heart muscle and is squeezed with each heartbeat. — In a normal artery, blood flows freely along the heart’s surface. In a myocardial bridge, the artery dips down and runs through the heart muscle for a stretch, and the overlying muscle squeezes that segment with each heartbeat.

The reason a bridge can matter comes down to mechanics. Every time the heart contracts, the muscle squeezes. If a segment of artery is buried inside that muscle, it gets squeezed too, narrowing with each beat. The heart does most of its own blood supply during the relaxation phase between beats, and in a bridge the squeeze can linger into that phase, slightly delaying the artery from springing back open. When the heart is calm and beating slowly, this rarely matters. When the heart beats fast, during exertion, stress, or strong emotion, the relaxation phase shortens, and the lingering squeeze has proportionally more effect. This is why bridge symptoms, when they occur, are so often tied to exertion.

Why Most Bridges Cause No Trouble

The single most important thing to understand about muscle bridges is how common they are, and how rarely they cause problems. The numbers vary enormously depending on how you look for them, which is itself revealing.

Up to 1 in 4
people may have a myocardial bridge when hearts are examined closely, yet only a small fraction ever experience symptoms from it.
Imaging and autopsy studies, summarised in European Heart Journal, 2026

On a standard coronary angiogram, bridges turn up in only a few percent of people. On detailed imaging such as CT coronary angiography, the figure is much higher, and when hearts are examined directly the prevalence rises further still, into the range of one in five to one in four. The gap between these numbers tells the story: most bridges are shallow, short, and functionally silent. They are found incidentally, if they are found at all, and they sit quietly for a lifetime.

So if you have been told you have a bridge and you have no symptoms, the most likely situation by far is that the bridge is an anatomical footnote rather than a problem. It does not need fixing, and in most cases it does not need anything beyond the awareness that it is there.

When a Bridge Does Cause Symptoms

A minority of people with a bridge experience real symptoms, most commonly chest pain or tightness that comes on with exertion or stress and eases with rest. Some describe breathlessness, and some report that episodes last noticeably longer than a typical bout of exertional chest pain. Whether a particular bridge causes symptoms depends on several features working together.

Length of the bridge

A longer tunnelled segment means more of the artery is subject to the muscle’s squeeze with each beat. Longer bridges are more likely to be functionally significant than short ones.

Depth of the tunnel

How deeply the artery is buried in the muscle matters. A deeper bridge is compressed more forcefully, so deeper bridges tend to have a greater effect on blood flow than superficial ones.

Heart rate and exertion

A fast heart rate shortens the relaxation phase when the artery would normally recover. This is why bridge symptoms typically appear during exercise, stress, or strong emotion rather than at rest.

Coronary spasm

Bridges frequently sit alongside a tendency for the artery to spasm, or tighten suddenly. Spasm can drive symptoms independently of the bridge itself and changes how the condition is treated.

Endothelial function

The artery lining near a bridge is often under abnormal mechanical stress, which can impair its ability to relax and widen on demand. This contributes to symptoms in many bridge patients.

Plaque just upstream

The disturbed blood flow around a bridge tends to encourage fatty plaque to build up in the artery just before it, which can add its own contribution to symptoms and risk.

Because several of these factors often coexist, a bridge that looks modest on a picture can still be the source of meaningful symptoms, and a bridge that looks dramatic can sit silent. Anatomy alone does not settle the question. This is the central difficulty in managing bridges, and it shapes everything about how they are investigated.

Why a Bridge Is Harder to Diagnose Than It Sounds

It would be reasonable to assume that if a bridge shows up on an angiogram, the picture tells the whole story. In practice it rarely does. A standard coronary angiogram is good at finding flow-limiting blockages, but it has low sensitivity for bridges and tells you little about how deep a bridge is, how long it is, or whether it is actually responsible for a person’s symptoms.

When symptoms and anatomy do not obviously line up, cardiologists turn to more detailed assessment. Intravascular ultrasound, a tiny ultrasound probe threaded into the artery, is considered the most reliable way to confirm a bridge and measure its length and depth precisely. To judge whether the bridge is functionally significant, meaning it genuinely restricts flow under stress, specialised measurements are taken while the heart is pushed to work harder with a medication called dobutamine. Standard pressure-wire measurements used for ordinary blockages are not adequate for assessing a bridge, which is part of why bridge assessment is a specialised undertaking.

A particular pattern on a stress echocardiogram, a transient buckling in one part of the heart wall with the tip of the heart spared, can also raise suspicion of a bridge non-invasively. The broader point for patients is that confirming a bridge as the cause of symptoms is a deliberate, layered process, not a single glance at an angiogram.

Finding a bridge and proving that the bridge is the cause of someone’s pain are two very different things. Most bridges are bystanders. The clinical skill lies in identifying the minority that are genuinely to blame, and treating that group properly without over-treating everyone else.

Heart Matters editorial

How Symptomatic Bridges Are Treated

Medication comes first

For the large majority of people whose bridge does cause symptoms, medication is the first and usually the only treatment needed. The two mainstays are beta-blockers and calcium channel blockers. Both work in part by slowing the heart and easing the force of each contraction, which lengthens the relaxation phase and reduces the squeezing effect on the bridged artery. They can be very effective, and many people are managed comfortably on them for years.

One counter-intuitive point is worth knowing. Nitrates, which are a standard reliever for ordinary angina, are often used with caution in bridge patients and can sometimes make symptoms worse rather than better. If you have a bridge and find that a nitrate spray does not help your chest pain in the way you would expect, or seems to aggravate it, that is worth mentioning to your cardiologist rather than dismissing.

When an operation is considered

A small, carefully selected group of patients continue to have severe, life-limiting symptoms despite the best medication can offer, and have a bridge that has been confirmed as genuinely significant on detailed testing. For this group, a surgical option exists. The preferred operation is called surgical unroofing, in which the surgeon carefully divides the band of muscle lying over the tunnelled artery, freeing the vessel to return to the surface where it belongs.

Two other approaches, placing a stent inside the bridged segment or performing a coronary artery bypass, have generally proved less satisfactory for bridges specifically, which is why unroofing has become the favoured operation in suitable patients. It is important to stress that this is a treatment for a minority within a minority. The vast majority of people with a bridge will never come close to needing it.

What the Latest Research Shows

Until recently, a fair question about unroofing was whether its benefits lasted. Earlier work had shown good results at six months, but long-term evidence was thin. A 2026 study from Stanford University, published in the European Heart Journal, has now provided the most substantial answer to date.

The researchers followed 218 patients who had undergone surgical unroofing of a significant bridge in the left anterior descending artery after medication had failed to control severe angina. The patients were relatively young, with a median age of 49, and around 60% were women. They were followed for a median of five years.

Nearly 9 in 10
patients reported a meaningful, lasting improvement in their angina five years after surgical unroofing, with episodes typically falling from weekly to monthly.
Pargaonkar et al., European Heart Journal, 2026

Across every measure of symptoms and quality of life, patients reported significant and durable improvement, and most needed fewer anti-anginal medications afterwards than before. When the surgical patients were compared with a closely matched group who had a similarly significant bridge but were managed with medication alone, the surgical group showed greater relief from physical limitation and from the frequency of their angina. Importantly, the operation proved safe in experienced hands, with a low rate of major cardiac events over the follow-up period and none of those events attributed to the surgery itself.

The practical message for patients is measured rather than dramatic. For the specific, carefully selected group with a confirmed significant bridge and severe symptoms that medication cannot control, surgical unroofing is now backed by solid long-term evidence as a worthwhile option. It is not a treatment for an incidental finding, and it is not a first step. It is a well-supported last resort for those who genuinely need it.

The Bridge Is Rarely the Whole Story

One of the most useful insights from the recent research is that a bridge often travels with company. In the Stanford group, who were of course a highly selected population with difficult symptoms, almost all had a small build-up of fatty plaque in the artery just upstream of the bridge, and the great majority showed evidence of coronary spasm or of an artery lining that did not relax normally on testing.

This matters for two reasons. First, it explains why a few patients still have some symptoms even after a technically successful unroofing: if spasm or lining dysfunction was contributing, removing the muscle band does not address that part of the problem, and ongoing medication may still be needed. Second, the tendency for plaque to form just before a bridge is part of why attention to general cardiovascular risk, including the standard modifiable risk factors, remains relevant even when the headline issue is a structural one present from birth.

Heart Matters Resource

When in Doubt, Get Checked Out

If you have been told you have a muscle bridge and you are experiencing chest pain, breathlessness, or symptoms on exertion, those symptoms are worth a proper conversation with your cardiologist rather than assuming the bridge is harmless.

Read: When in Doubt, Get Checked Out →

Conclusion

A myocardial bridge is, for most people, exactly what it usually sounds like when a cardiologist mentions it in passing: a common quirk of heart anatomy that asks nothing of you and changes nothing about your life. If you have one and no symptoms, that is almost certainly where the story ends.

For the minority who do have symptoms, a bridge is a real and treatable condition. The key is careful assessment to confirm whether the bridge is genuinely the cause, sensible use of medication for the many, and a well-evidenced surgical option held in reserve for the few who need it. If you have a bridge and symptoms that affect your daily life, the right next step is not to worry alone but to have it properly evaluated, because the difference between a harmless bystander and a treatable problem is exactly the kind of question modern cardiology is now well equipped to answer.

White Coat Hypertension: When Your BP Spikes at the Doctor’s

May 29, 2026

Doctor measuring blood pressure of patient. white coat hypertension

Key Points

White coat hypertension is when your blood pressure reads high in the clinic but sits in the normal range during ordinary daily life. It is common, affecting up to one in three people whose office readings are raised.
It is caused by a stress response to the medical setting itself, not by a fault in your heart or blood vessels. The reading is real, but it does not reflect your usual blood pressure.
The only reliable way to confirm it is to measure blood pressure away from the clinic, using either a 24-hour ambulatory monitor or a structured week of home readings.
White coat hypertension is not always harmless. Some people go on to develop sustained high blood pressure, so ongoing monitoring matters even when no medication is started.
Its mirror image, masked hypertension, is the more dangerous pattern: normal in the clinic, high at home, and easy to miss without out-of-office measurement.

The cuff tightens, the nurse watches the dial, and the number that appears is higher than anything you ever see at home. It happens every visit. You feel perfectly well, your home readings are reassuring, and yet the clinic keeps telling you your blood pressure is up. If this sounds familiar, you may have white coat hypertension.

It is one of the most common and most misunderstood findings in everyday medicine. The reading on the machine is not wrong. Your blood pressure really did rise in that moment. The question is whether that rise reflects how your heart and arteries behave during the other 23 hours of the day, when no one is watching.

Getting that question right matters. Treat white coat hypertension as though it were sustained high blood pressure and a person can end up on medication they do not need. Dismiss it entirely and you can miss the early warning that genuine hypertension is developing. The path between those two errors runs through one simple idea: measure blood pressure where life actually happens.

What White Coat Hypertension Actually Is

White coat hypertension describes a specific pattern. Blood pressure measured in a clinic or surgery is in the hypertensive range, while blood pressure measured away from the clinic is normal. The term comes from the white coats traditionally worn by doctors, though the effect has far more to do with the setting than the clothing.

The mechanism is a stress response. Being assessed by a health professional, sitting in an unfamiliar room, anticipating bad news, or simply rushing to make the appointment can all trigger a brief surge in heart rate and blood pressure. This is the same fight-or-flight system that sharpens your senses before a job interview. In most people it settles within minutes of leaving. For some, it switches on reliably the moment a cuff appears.

This is different from anxiety as a diagnosis. Many people with white coat hypertension do not feel anxious at all. The body responds to the clinical context automatically, below the level of conscious worry, which is part of why telling someone to relax so rarely lowers the number.

If the two numbers in a blood pressure reading have always been a little mysterious, this short explainer walks through what systolic and diastolic actually mean.

Watch · Heart Matters

Systolic and diastolic, explained. A plain-English guide to what the two numbers in a blood pressure reading actually mean.

How Common Is It?

White coat hypertension is far from rare. Across large studies, when people with raised office readings are checked properly away from the clinic, a substantial proportion turn out to have normal everyday blood pressure.

15 to 30%
of people with high readings in the clinic are found to have white coat hypertension once their blood pressure is measured during normal daily life
International blood pressure registries

The effect tends to be more pronounced in older adults and in people who have been told for years that they have high blood pressure. It can even appear in people already taking blood pressure medication, where it can make treatment look as though it is failing when in fact the everyday numbers are well controlled.

Why It Is Easy to Get Wrong

The trouble with a clinic reading is that it captures a single, atypical moment. A few minutes in a medical room, often after sitting in a waiting area or hurrying through traffic, is not a fair sample of a whole day. Yet for decades this single snapshot was the basis for diagnosing high blood pressure.

When the diagnosis rests on office readings alone, two opposite mistakes become possible. The first is overdiagnosis: labelling someone hypertensive, and starting lifelong treatment, when their true blood pressure is fine. The second is the reverse problem, where genuinely high blood pressure outside the clinic goes undetected because the office reading happens to look acceptable.

Modern guidelines now treat measurement outside the clinic as essential rather than optional. The same principle underpins our advice on monitoring your blood pressure at home: the numbers that matter most are the ones gathered during ordinary life, not in a single moment of clinical stress.

White Coat Versus Masked Hypertension

White coat hypertension has a mirror image, and understanding both makes the whole picture clearer. They are opposite patterns, and they carry very different levels of risk.

White Coat Hypertension

High in the clinic, normal at home. Risk is generally lower than sustained high blood pressure, but it can progress over time, so it needs watching rather than ignoring.

Masked Hypertension

Normal in the clinic, high at home. This is the more concerning pattern, because the raised blood pressure quietly damages arteries and the heart while routine checks look reassuring.

Masked hypertension is the more dangerous of the two precisely because it hides. A person feels well, their clinic readings look fine, and no one suspects a problem, while their blood pressure runs high during work, sleep, and daily activity. This is part of why a single normal reading in the surgery is no longer considered enough to rule high blood pressure out.

How It Is Diagnosed

Confirming white coat hypertension means comparing clinic readings with readings taken during normal life. There are two reliable ways to do this, and your doctor may use either or both.

Ambulatory monitoring

A small device worn for 24 hours takes automatic readings during the day and overnight. It gives the fullest picture, including how blood pressure behaves during sleep.

Home monitoring

A validated upper-arm monitor used at set times over about a week. Readings taken morning and evening, while seated and rested, build a reliable everyday average.

The thresholds differ slightly between settings, which surprises many people. Clinic readings use one cut-off for diagnosing high blood pressure, while home and daytime ambulatory averages use a slightly lower one. This is normal and expected, because blood pressure is genuinely a little lower in relaxed, familiar surroundings.

For a closer look at why the clinic setting itself nudges your reading upward, this video explains what is happening in the body during that moment.

Watch · Heart Matters

The white coat effect, up close. Why the clinic setting itself can push your reading up, and what is happening in the body.

A blood pressure reading is a moment, not a verdict. The honest answer almost always comes from measuring it where the patient actually lives their life.

Prof. Peter Barlis, Interventional Cardiologist

Does It Need Treatment?

For true white coat hypertension, where everyday blood pressure is genuinely normal, medication is often unnecessary. The reading that rises only in the clinic does not, on its own, justify lifelong tablets. What it does justify is ongoing attention.

That is the key nuance. White coat hypertension sits somewhere between normal blood pressure and sustained high blood pressure in terms of long-term risk. A meaningful number of people with it will develop genuine hypertension within a few years. So the sensible approach is regular review, repeat out-of-office measurement, and attention to the everyday habits that keep blood pressure healthy.

Where lifestyle and risk factors are concerned, the same fundamentals apply as for anyone protecting their heart: maintaining a healthy weight, limiting salt and alcohol, staying physically active, and not smoking. Even something as accessible as regular walking contributes to keeping blood pressure in a healthy range over time.

When blood pressure is genuinely high outside the clinic, treatment follows the usual path. The medicines most often used include ACE inhibitors, angiotensin receptor blockers, and calcium channel blockers, chosen to suit the individual. The decision to start, change, or hold any blood pressure medicine is one only your doctor or cardiologist can make for you, based on your full picture rather than a single number.

Getting an Accurate Reading at Home

If you are monitoring your own blood pressure, a few simple habits make the readings far more trustworthy. Small details in technique can shift a result by enough to change a diagnosis.

Sit and settle first

Rest quietly for five minutes before measuring. Sit with your back supported, feet flat on the floor, and legs uncrossed.

Support your arm

Rest your arm on a table so the cuff sits at heart height. An unsupported or dangling arm can push the reading up noticeably.

Measure twice, same times

Take two readings a minute apart, morning and evening, for several days. Record them all rather than picking the lowest.

Avoid caffeine, exercise, and smoking for at least 30 minutes beforehand, and empty your bladder first, as a full bladder can raise the reading. Use a validated upper-arm monitor rather than a wrist device, and bring your log to your next appointment so the pattern, not just a single number, guides the conversation.

Heart Matters Resource

When in Doubt, Get Checked Out

If your clinic and home readings keep telling you different stories, that is worth investigating properly rather than guessing. A short period of out-of-office monitoring can settle the question for good.

Read: When in Doubt, Get Checked Out →

Conclusion

White coat hypertension is a reminder that a blood pressure reading is a measurement of a moment, not a final judgement on your heart. The number that climbs in the clinic is genuine, but it tells only part of the story. The fuller answer comes from seeing how your blood pressure behaves across an ordinary day.

If your clinic readings have been high but you suspect they do not reflect your everyday self, the practical step is straightforward: ask about ambulatory or home monitoring, measure carefully, and review the pattern with your doctor. Whether the outcome is reassurance or the early detection of genuine high blood pressure, you come away knowing your real numbers, which is exactly where good heart care begins.

The Best Scale for Weight Loss? It Might Not Be the One in Your Bathroom

May 28, 2026

Key Points

The most useful scale for managing weight and protecting your heart may not be the one in your bathroom. It is the one in your kitchen. A kitchen scale provides the accurate portion awareness that changes how you think about food for good.
Most people significantly underestimate how much they are eating, not through carelessness but because visual portion estimation is genuinely unreliable, particularly for calorie-dense foods like oils, nuts, cheese, and grains.
Weighing food does not need to be permanent or obsessive. A few weeks of occasional, curious measurement builds a mental reference library that persists long after the scale is put away.
Excess body weight is one of the most significant modifiable cardiovascular risk factors. It drives high blood pressure, abnormal cholesterol, and insulin resistance. Accurate portion awareness is a direct and practical tool for addressing it.
This is not a diet. It is an awareness tool, used with curiosity rather than rigidity, and without forbidden foods or rigid calorie counting.

Ask most people what the best scale for weight loss is, and they will describe the one in the bathroom. Step on it each morning, watch the number, adjust accordingly. It is the most familiar measurement in health, and also, for many people, one of the most frustrating. The number fluctuates day to day with hydration and timing. It tells you what happened but rarely tells you why. And for a significant number of people, the daily ritual of stepping on the scales produces more anxiety than insight.

There is another scale worth considering. It sits in the kitchen, costs less than a good cookbook, and has the potential to quietly transform the way you understand food, without a single diet, rule, or forbidden list.

This is not a weight loss prescription. It is an idea worth sitting with. For many people, the missing piece in managing their weight and protecting their heart is not knowledge of what to eat. It is accurate awareness of how much.

The Problem With Portion Guessing

Most of us have been estimating food portions our entire lives. A handful of this, a drizzle of that, a serving of something else. And most of us, regardless of how health-conscious we are, significantly underestimate what those amounts actually weigh and what they contain.

This is not a character flaw. It is human. Our visual estimates of volume and weight are simply not calibrated for the precision that nutrition requires.

Research consistently bears this out. A landmark New England Journal of Medicine study, replicated many times since across different populations, compared what adults reported eating against what biochemical testing showed they had actually consumed. The mismatch was striking.

47%
average underreporting of daily food intake when adults’ self-reports were compared with a gold-standard biochemical measurement of true energy intake.
Lichtman et al., New England Journal of Medicine, 1992

Restaurant portions, which have increased substantially over the past three decades, have gradually recalibrated our sense of what a normal serving looks like at the same time.

A bowl of pasta that feels modest is often two to three times a standard serving. A drizzle of olive oil, heart-healthy though it is, can easily be three or four tablespoons rather than one. A small handful of mixed nuts, barely noticed as an afternoon snack, can be 250 to 300 calories.

None of these foods are bad. That is not the point. The point is that without occasional, curious measurement, most of us are working with a mental map that does not match the territory. That mismatch, repeated across every meal, every day, accumulates in ways that are genuinely difficult to see.

What the Kitchen Scale Actually Does

Weighing your food, even occasionally and informally, does something that no app, label, or nutrition guide can fully replicate. It anchors the abstract to the concrete. When you weigh 30 grams of cheese and see how small it is, or weigh what you thought was a modest bowl of cereal and find it is nearly three servings, those moments of reality recalibration stay with you in a way that reading about portion sizes simply does not.

Think of it less as measuring and more as calibrating. A few weeks of occasionally weighing common foods, the ones you eat regularly, the ones you think you know, builds a mental reference library that persists long after you put the scale away. That library changes how you pour, how you serve, how you estimate. It is a one-time investment in awareness that pays ongoing dividends without ongoing effort.

The most common finding when patients start weighing their food is not that they are eating the wrong things. It is that they are eating the right things in quantities they had never accurately assessed. That awareness, once gained, is very hard to lose.

Prof. Peter Barlis, Interventional Cardiologist

The Foods That Produce the Greatest Surprises

Not all foods need the same level of precision. Vegetables, lean proteins, and most fruits are sufficiently low in calorie density that generous visual portions rarely cause meaningful nutritional inaccuracy. The foods where a scale reveals the most are those where a small volume difference translates into a large calorie difference.

Cooking oils

The most consistently underestimated calorie source in home cooking. A casual pour is typically three to four times a measured portion, even with heart-healthy olive oil at 120 calories per tablespoon.

Nuts and seeds

Nutritionally excellent but calorie-dense. A standard serve is 30g, about a small handful. Most people pour 60 to 80g without registering the difference, doubling or tripling the intended intake.

Grains and pasta

Dry weight versus cooked weight is a consistent source of confusion. Pasta roughly triples in weight when cooked. A 60g dry portion becomes 180g cooked, which looks modest but is a meaningful carbohydrate load.

Cheese

A standard serve is 30g, roughly the size of a matchbox. Most people serve two to three times this amount without registering it. Cheese is also one of the most significant hidden sources of dietary sodium.

Sauces and dressings

Often overlooked entirely in nutritional accounting. A restaurant-style pour of salad dressing can add 200 to 400 calories and significant sodium to a meal that was otherwise light.

Protein portions

A 150g chicken breast and a 250g chicken breast look similar on a plate but differ significantly in protein and calories. For anyone optimising protein intake, accurate weighing is the only reliable method.

Why Weight Management Matters for Your Heart

Weight management is not a cosmetic concern on a cardiology platform. It is central to cardiovascular health.

Excess body weight is one of the most significant modifiable cardiovascular risk factors, driving elevated blood pressure, abnormal cholesterol, insulin resistance, type 2 diabetes, and sleep apnoea.

Even modest sustained weight loss, of 5 to 10% of body weight, produces measurable improvements across most of these risk factors. Blood pressure falls. HDL cholesterol rises. Blood sugar improves. Inflammation reduces.

These are not small effects. They are clinically meaningful changes that reduce the long-term risk of heart attack and stroke. Accurate portion awareness is one of the most practical and sustainable tools for achieving and maintaining that modest weight loss without a restrictive diet.

How to Use a Kitchen Scale Well

The most useful framing is curiosity rather than compliance. Weigh things you eat regularly, not to judge them, but to understand them. What does a standard serve of olive oil actually look like? How much does the portion of rice you usually serve actually weigh? These questions, answered accurately once, change the mental reference point permanently.

Focus precision where it matters most. Vegetables, leafy greens, and lean proteins can be estimated generously without consequence. Oils, nuts, grains, cheese, and sauces are where a scale earns its keep. The tare function, the button that zeros the display with a container already on the scale, lets you add ingredients sequentially to the same bowl and makes the process fast enough to be practical rather than feeling like a laboratory exercise.

The most valuable phase is the first few weeks. After weighing the same foods repeatedly, the visual memory of a correct portion becomes reliable enough that the scale is needed less often. Many people find they only need to return to it periodically, when starting a new food, when weight has crept up unexpectedly, or when re-establishing accuracy after a period of less structured eating.

A Note on Balance

For some people, tracking and measuring food can tip into anxious or disordered territory, and that is worth being honest about. If weighing food produces anxiety rather than insight, it is not the right tool at this time, and that is a conversation worth having with your GP or a dietitian. The Butterfly Foundation national helpline (1800 33 4673) provides confidential support if you or someone close to you is struggling with disordered eating.

For most people, however, a few weeks of curious, non-judgmental measurement produces awareness rather than anxiety. That awareness, once gained, is genuinely difficult to lose. The kitchen scale does not change what you eat. It changes what you know about what you eat. And knowledge, applied with self-compassion and without rigidity, is where lasting change begins.

Practical steps to start

Weigh your cooking oil for one week. Pour what you would normally use, then weigh it. The result is almost always surprising.
Weigh a portion of nuts before eating them. Then compare it to what you would have poured without thinking.
Weigh dry pasta or rice before cooking, and note how the volume changes once cooked. This calibration is immediately and lastingly useful.
Use the tare function to add ingredients sequentially to the same bowl. It makes the process fast enough to be practical every day.
After four to six weeks of regular weighing, test your visual accuracy. Estimate first, then weigh and compare. Most people find the improvement is significant.

Free Download · Heart Matters

Our Heart Health Risk Factor Checklist covers 12 cardiovascular risk categories, including weight and metabolic health. A useful tool to bring to your next appointment.

Download the Risk Factor Checklist →

Heart Matters Resource

When in Doubt, Get Checked Out

If you are concerned about your weight and its impact on your heart health, a conversation with your GP or cardiologist about your cardiovascular risk profile is the right starting point.

Read: When in Doubt, Get Checked Out →

Conclusion

The best scale for weight loss is not the one in your bathroom. It is the one in your kitchen, used not as a tool of restriction but as a tool of understanding. A few weeks of curious, non-judgmental measurement reveals portion truths that stay with you permanently, changing how you cook, serve, and estimate food without requiring ongoing effort or obsession.

Combined with a heart-healthy dietary pattern and regular movement, accurate portion awareness is one of the most practical and sustainable contributions to both weight management and cardiovascular health available. It costs around $20. It takes seconds to use. And what it reveals is genuinely difficult to un-see, in the best possible way.

Cardiac Fatigue: When Tiredness Is More Than Being Tired

May 23, 2026

Key Points

Fatigue (persistent, disproportionate tiredness) is one of the most underappreciated cardiac symptoms, frequently attributed to stress, poor sleep, or ageing before a cardiac cause is considered.
When the heart is not pumping efficiently, the body diverts blood away from muscles and peripheral tissues to protect the brain and vital organs, producing the profound, heavy tiredness that characterises cardiac fatigue.
Cardiac fatigue is typically out of proportion to activity level, does not improve with rest in the way normal tiredness does, and is often accompanied by other symptoms such as breathlessness or ankle swelling.
Heart failure, significant valve disease, atrial fibrillation, and coronary artery disease can all present primarily as fatigue, particularly in women, older adults, and people with diabetes.
Fatigue that is new, progressive, or unexplained deserves investigation, not reassurance without assessment.

Fatigue is one of the great diagnostic challenges in medicine. It is almost universal, nearly everyone who sees a doctor mentions tiredness at some point. And because it is so common and so non-specific, it is often passed over quickly, attributed to lifestyle factors, and not investigated as systematically as it should be.

But cardiac fatigue has a quality that distinguishes it, and patients who have experienced it often describe it as unlike any tiredness they have felt before. It is heavy. It is persistent. It does not lift after a good night’s sleep. It limits what they can do in a way that feels disproportionate to how hard they are actually working.

It is worth saying clearly at the outset: most fatigue is not caused by the heart. Far more often the explanation is something like poor sleep, stress, a viral illness, low iron, or an underactive thyroid. But cardiac fatigue is a real and distinct thing, and understanding its causes, and the symptoms and patterns that should raise concern, is genuinely important, because fatigue is frequently the first and sometimes the only prominent symptom of significant cardiac disease.

Why the Heart Causes Fatigue

Reduced cardiac output

The heart’s primary job is to deliver oxygenated blood to every tissue in the body. When the heart is not pumping as strongly as it should, whether from a weakened heart muscle, a significant valve problem, or an irregular rhythm, the body’s tissues receive less oxygen and less fuel than they need to function normally.

The body responds with a hierarchy of protection: blood is directed preferentially to the brain and vital organs. Muscles, skin, and peripheral tissues receive less. The result is the muscular weakness, heaviness, and profound tiredness that patients with heart failure describe, the legs that feel like lead, the arms that tire carrying a bag of shopping, the effort required to do things that used to require no effort at all.

The body’s stress response

Heart failure also triggers a cascade of stress hormones and chemical signals, the body’s attempt to compensate for a struggling heart. Over time, these responses have their own side effects, including fatigue, muscle wasting, and a general sense of unwellness that goes beyond simple tiredness.

The slow onset

Cardiac fatigue typically develops gradually, so gradually that patients accommodate to it the same way they accommodate to progressive breathlessness. They stop doing things that tire them. They attribute the tiredness to getting older, to stress, to not sleeping well. By the time they present for assessment, significant cardiac compromise may already have been present for months.

One question I often ask is: “What were you able to do six months ago that feels harder now?”
These changes can be subtle and easy to dismiss as a natural part of ageing.
It is always worth a conversation with your doctor, simple tests can offer clarity and help you get that spring back in your step.

Cardiac Conditions That Present Primarily as Fatigue

Heart failure

Fatigue is one of the cardinal symptoms of heart failure, often preceding breathlessness, particularly in the early stages. The reduced pumping capacity means that even modest exertion produces a degree of tiredness that feels out of all proportion to the effort involved. Many patients describe fatigue as their most limiting symptom, even when their heart scan results show significant changes.

Atrial fibrillation

AF reduces the heart’s efficiency in several ways, the irregular rhythm is less effective than a regular one, and a fast heart rate reduces the time for the heart to fill properly between beats. Many people with AF describe fatigue and reduced exercise tolerance as their most prominent symptoms, more so than palpitations.

Significant valve disease

Aortic stenosis in particular can present with fatigue as a predominant early symptom, before breathlessness, chest pain, or dizziness become apparent. The increased effort required to pump blood through a narrowed valve can produce significant fatigue well before other symptoms develop.

Coronary artery disease

In some people, particularly women, older adults, and those with diabetes, fatigue on exertion can be the main warning sign of reduced blood flow to the heart, even without any chest pain at all. Fatigue on exertion that is out of proportion to the effort involved, in someone with cardiovascular risk factors, should always prompt a conversation with your doctor.

Bradycardia and medication effects

A significantly slow heart rate, from the heart’s own natural pacemaker slowing down, a problem with the heart’s electrical system, or medication, reduces how much blood the heart pumps with each beat, and can produce profound fatigue. Beta-blockers, which are used widely in heart medicine, can cause fatigue as a side effect, sometimes to a degree that significantly impacts quality of life. If fatigue develops after starting a new cardiac medication, the timing connection is worth discussing with the prescribing team.

Heart failure

Reduced pumping capacity leads to muscle underperfusion, heavy, persistent tiredness that does not lift with rest.

Atrial fibrillation

AF reduces the heart’s efficiency. Many people with AF experience fatigue and reduced exercise tolerance more than palpitations.

Valve disease

Aortic stenosis can present as fatigue before more classic symptoms develop, the increased workload on the heart produces energy depletion.

Coronary artery disease

Fatigue on exertion can signal reduced blood flow to the heart muscle, particularly in women, older adults, and people with diabetes where chest pain may be absent.

Bradycardia

A significantly slow heart rate reduces how much blood the heart pumps and can produce profound tiredness, sometimes worsened by cardiac medications.

Non-cardiac causes

Anaemia, thyroid disease, diabetes, sleep apnoea, depression, all require consideration alongside cardiac causes, and may coexist.

Distinguishing Cardiac Fatigue

Several features help distinguish cardiac fatigue from the more common causes of tiredness, though ultimately investigation is needed to be certain.

Cardiac fatigue tends to be related to exertion, worse with activity, somewhat better with complete rest, but never fully resolved. It is disproportionate to the level of activity involved, tasks that should be easy feel exhausting. It is progressive, getting worse over weeks and months rather than fluctuating day to day. And it is often accompanied by at least one other cardiac symptom, breathlessness, ankle swelling, palpitations, or reduced exercise tolerance, even if that symptom is mild and has been attributed to other causes.

Investigation

The investigation of unexplained or progressive fatigue should include a full blood count for anaemia, thyroid function, kidney function, a blood sugar test for diabetes, and a BNP blood test, a simple marker that indicates how hard the heart is working. A standard heart tracing (ECG) assesses rhythm and rate. A heart ultrasound (echocardiogram) provides the most comprehensive picture, how well the heart is pumping, how the valves are working, and whether there are signs of pressure building up.

If the history suggests fatigue on exertion with cardiovascular risk factors, further tests to assess blood flow to the heart may follow. A sleep study may also be arranged if sleep apnoea is suspected, it is more common than it is diagnosed, and it is a significant and treatable cause of both fatigue and cardiac risk.

Questions worth asking at your next appointment

Could my fatigue have a cardiac cause, and what investigations would identify or exclude this?
I have been more tired since starting a new medication, could this be a side effect, and is there an alternative?
Is my fatigue related to my heart condition, or is it likely to have another explanation?
Should I have a heart strain blood test and a heart ultrasound as part of the workup?
Could sleep apnoea be contributing, and should I have a sleep study?

Heart Matters Resource

Our Heart Health Risk Factor Checklist covers 12 cardiovascular risk categories, a useful tool to bring to any appointment investigating unexplained fatigue, to ensure the full cardiovascular picture is considered.

Download the Risk Factor Checklist →

Heart Matters Resource

When in Doubt, Get Checked Out

Fatigue that is new, progressive, disproportionate to your activity level, or accompanied by any other cardiac symptom deserves investigation, not reassurance that it is simply age or stress.

Read: When in Doubt, Get Checked Out →

Conclusion

Fatigue is easy to dismiss and easy to over-explain. “You’re working too hard.” “You’re not sleeping well.” “It’s your age.” These explanations are sometimes correct, but they should be reached after appropriate investigation, not instead of it.

Cardiac fatigue is real, specific, and measurable. It responds to treatment, sometimes dramatically. Many patients who have lived with progressive fatigue for months describe the improvement after effective heart failure therapy or AF rate control as transformative, not just feeling better, but feeling like themselves again in a way they had stopped expecting.

If your fatigue is new, progressive, or qualitatively different from normal tiredness, particularly if it limits what you can do or is accompanied by any other cardiac symptom, that is the conversation worth having with your doctor.

Racing Heart: Causes and Patterns Explained

May 31, 2026May 20, 2026

Key Points

A fast heart rate, known clinically as tachycardia, is defined as a resting rate above 100 beats per minute. Like a slow heart rate, it exists on a wide spectrum from entirely normal to clinically significant.
A racing heart felt suddenly and without obvious cause, particularly if it is regular, rapid, and accompanied by dizziness or breathlessness, is a common reason people seek cardiac assessment. An ECG recorded during the episode is one of the most useful pieces of information a clinician can have.
The most common causes of a persistently fast resting heart rate are dehydration, anaemia, thyroid overactivity, stimulant intake, anxiety, and fever. All are reversible once identified.
The main rhythm disturbances that produce a fast heart rate include atrial fibrillation, SVT, and atrial flutter. Each has a distinct pattern, and each is something a doctor can identify and discuss with you.
A very fast, regular, sudden-onset racing heart that does not settle with rest or simple measures is generally treated as urgent in standard clinical practice.

Almost everyone has experienced their heart racing at some point. After sprinting for a bus. During a frightening moment. After too much coffee. In those contexts it is entirely expected, entirely normal, and entirely self-limiting.

A racing heart that comes on unexpectedly, without obvious cause, and does not settle quickly, or one that is accompanied by dizziness, breathlessness, or chest discomfort, is worth understanding more carefully. The question is not just “is my heart beating fast?” but “why is it beating fast, and is this something that needs attention?”

The answer depends on several things: how fast, how regular, how sudden the onset, how long it lasts, and what else is happening at the same time.

What Is a Fast Heart Rate?

The numbers

A resting heart rate above 100 beats per minute is technically classified as tachycardia. Like most medical definitions, the threshold matters less than the context. A resting rate of 105 in someone who has just run upstairs is completely normal. A resting rate of 105 in someone sitting quietly who felt their heart suddenly accelerate is a different conversation entirely.

What your doctor will ask

When you describe a racing heart to a doctor, a few simple observations help guide the conversation more than almost anything else. Was the heartbeat regular or irregular, like a chaotic flutter? Did it come on suddenly, or build up gradually? Did it stop suddenly, or settle slowly? Were there any other symptoms at the same time, such as dizziness or breathlessness? How long did it last?

If you have a smartwatch that took an ECG or flagged an unusual rhythm at the time, that recording is genuinely useful, more useful than any description, and worth showing your doctor. A growing number of arrhythmias are now first picked up by smartwatch alerts, and clinicians take these seriously.

The most likely explanations for a fast heart rate fall into a few broad groups, all of which we cover in more detail elsewhere on Heart Matters. The non-cardiac causes listed below are by far the most common. The arrhythmia explainers cover the main rhythm disturbances in plain language, with links to dedicated guides on each.

Non-Cardiac Causes of a Fast Heart Rate

The majority of people with a persistently elevated resting heart rate have a reversible non-cardiac cause. These are important to identify because the underlying issue is usually straightforward to address once it is found.

Common Non-Cardiac Causes

Dehydration

Reduced blood volume causes the heart to beat faster to maintain output. One of the most common and easily corrected causes.

Anaemia

Reduced oxygen-carrying capacity in the blood prompts the heart to beat faster. Identified by a simple blood count.

Thyroid Overactivity

Hyperthyroidism raises the heart rate and increases arrhythmia risk. Identified by a thyroid function blood test.

Anxiety and Stress

Activation of the body’s stress response raises heart rate. Anxiety-related tachycardia is real, though cardiac causes are usually considered first.

Caffeine and Stimulants

Coffee, energy drinks, and some medications raise heart rate directly. Often underestimated as a contributor.

Fever and Infection

Every degree of temperature rise increases heart rate by around 10 beats per minute. Settles once the infection is treated.

Cardiac Arrhythmias: When the Racing Heart Is the Diagnosis

Three rhythm disturbances account for the great majority of arrhythmia-related racing heart episodes. Each has a distinctive pattern, and each is identifiable on an ECG.

SVT

Sudden onset, very regular, very fast. Starts and stops abruptly without warning. More frightening than dangerous in structurally normal hearts, and very treatable once identified.

Atrial Fibrillation

Irregular and often fast. Frequently described as a chaotic flutter rather than a steady racing. The most common sustained arrhythmia, and one of the most important to identify.

Atrial Flutter

Regular and fast, typically around 150 beats per minute. Feels like a steady rapid pounding. Similar to SVT in sensation but driven by a different mechanism in the upper chambers.

Supraventricular tachycardia (SVT)

SVT produces a sudden-onset, very regular, very fast racing heart, typically 150 to 220 beats per minute, that starts and stops abruptly without warning. It is more frightening than it is dangerous in people with structurally normal hearts, and it is one of the more treatable arrhythmias once identified. We have a dedicated article on SVT on Heart Matters.

Atrial fibrillation

AF produces an irregular, often fast racing sensation. The irregularity is one of its distinguishing features. It may feel like a chaotic fluttering rather than a regular racing. AF is the most common sustained cardiac arrhythmia and one of the most important to identify, partly because it carries an elevated stroke risk that is usually addressed with anticoagulation. Symptom management uses one of two strategies: rate control, which slows the heart down to a comfortable pace while the irregular rhythm continues, or rhythm control, which aims to restore a normal heart rhythm altogether. Which approach is chosen depends on the individual, and is a conversation with a cardiologist.

Atrial flutter

Atrial flutter typically produces a fast, regular racing heart at around 150 beats per minute, often described as a rapid but steady pounding. It can feel similar to SVT but has a different underlying mechanism. An ECG recorded during the episode is the key to telling the two apart, and the management approach is slightly different for each.

An ECG recorded during an episode of racing heart tells us more than any description afterwards. Even a smartwatch trace, shown to a doctor later, can be genuinely useful.

Prof. Peter Barlis, Interventional Cardiologist

Patterns of Presentation and How They Are Usually Approached

Most episodes of racing heart are self-limiting and not dangerous. The table below describes how different patterns are typically approached in clinical practice. It is not personalised advice. Decisions about seeking care for your own situation are best made in discussion with your doctor, or with the local emergency service if symptoms are severe.

Pattern	Typical clinical approach
Racing heart with loss of consciousness or near-fainting	Treated as a medical emergency, with people generally advised to call emergency services
Racing heart with chest pain or severe breathlessness	Treated as a medical emergency, with people generally advised to call emergency services
Sustained fast racing heart not settling after 30 minutes	Generally prompts urgent assessment. Driving oneself to hospital is usually advised against in this situation
First-ever episode of rapid irregular heart rate	Same-day medical review is typical, to allow an ECG to be performed
Recurrent episodes previously investigated and confirmed benign	Planned cardiology review, sometimes with a Holter monitor
Persistently fast resting rate above 100 without obvious cause	Medical review within days is typical, including blood tests and an ECG

Questions Worth Raising at Your Next Appointment

If I have another episode, what is the best way to try to capture an ECG at the time?
Is my resting heart rate elevated, and has a reversible cause been considered?
Could my racing heart episodes be SVT, AF, or another arrhythmia?
Would a Holter monitor be useful in my case to try to capture the rhythm during symptoms?
Are there triggers I should be aware of in my own pattern, such as caffeine, alcohol, or poor sleep?

Heart Matters Resource

When in Doubt, Get Checked Out

A racing heart that is new, prolonged, irregular, or accompanied by dizziness or breathlessness is a common reason people seek assessment. An ECG recorded during the episode answers questions that no description can.

Read: When in Doubt, Get Checked Out →

Conclusion

A racing heart has many causes, most of them benign, and many of them correctable without any cardiac treatment at all. Dehydration, thyroid disease, anaemia, and anxiety all produce a fast heart rate that resolves once the underlying cause is addressed.

The pattern that more often leads to cardiac assessment is a racing heart that comes on suddenly without warning, feels rapid and regular, or is accompanied by dizziness or breathlessness, particularly if it has happened before. An ECG recorded during an episode is one of the most useful pieces of information available in working out what is going on. Most people who have their racing heart investigated come away with answers, often reassuring ones, and sometimes a diagnosis that is very treatable.

Stroke and TIA Explained

May 31, 2026May 17, 2026

Brain MRI scans showing imaging used after stroke and TIA assessment

Key Points

A stroke happens when blood flow to part of the brain is cut off and brain cells begin to die. A TIA, or transient ischaemic attack, causes the same symptoms, but the blockage clears on its own before permanent damage occurs.
A TIA is a medical emergency, not a minor event. The risk of a full stroke is highest in the 48 hours that follow, so rapid assessment and treatment in that window makes an enormous difference.
Investigations after a stroke or TIA focus on finding the cause: narrowing in the neck arteries, an irregular heart rhythm called atrial fibrillation, a structural problem with the heart, or abnormal blood clotting.
The right medications started promptly after a TIA, including blood thinners, blood pressure treatment, and statins, significantly reduce the risk of a subsequent stroke.
A TIA is not a frightening endpoint. It is an opportunity. The evidence that acting quickly and comprehensively prevents stroke is among the strongest in all of vascular medicine.

A stroke or TIA can feel frightening when the symptoms first appear. One side of the face droops. A hand will not grip. Words come out wrong. Whether those symptoms last two minutes or two hours, they mean something important is happening that demands to be taken seriously.

A TIA is one of the most important medical events a person can experience, not because of the symptoms themselves, which resolve completely, but because of what they represent. The brain’s blood supply was briefly interrupted. The fact that it recovered fully this time does not mean the underlying cause has gone away.

The good news, and this is the central message, is that medicine now has highly effective ways to respond. The window between a TIA and a potential stroke is narrow, but it is also a genuine opportunity to intervene. The people who do best are those who engage with that opportunity quickly and completely.

What Is a Stroke?

A stroke happens when blood flow to part of the brain is suddenly interrupted. There are two main types. An ischaemic stroke occurs when a clot blocks one of the arteries supplying the brain. A haemorrhagic stroke occurs when there is bleeding from a blood vessel in or around the brain. In both situations, the affected area of the brain is at risk of injury, which is why time is so important in treatment.

The effects depend on which part of the brain is affected. Speech, movement, vision, balance, and memory can all be disrupted. Some effects improve significantly over time with rehabilitation, while others can be longer lasting or permanent. This is precisely why preventing a first stroke, or a second one, matters so much.

What Is a TIA?

A TIA, or transient ischaemic attack, produces exactly the same symptoms as a stroke, but the blockage clears on its own before permanent damage occurs. Symptoms appear suddenly, typically peak within seconds to a minute, and then resolve completely. In most cases this happens within minutes, though by definition it occurs within 24 hours.

Brain imaging after a true TIA shows no area of permanent damage. This is what distinguishes it from a minor stroke, though the immediate management of both is identical.

It is sometimes called a “mini-stroke”, but that name does it a serious disservice. A TIA is not a small event. It is a clear warning that the blood supply to the brain is not right, and that the risk of a full stroke in the days and weeks ahead is significantly elevated.

I never dismiss a TIA because the symptoms have passed. The fact that the brain recovered is exactly what gives us the best possible chance to prevent what could come next.

Prof. Peter Barlis, Interventional Cardiologist

1 in 10
people who have a TIA will go on to have a full stroke within 3 months without treatment, with the highest risk concentrated in the first 48 hours.
American Stroke Association

Recognising the Signs: FAST

The FAST acronym captures the most important warning signs of stroke and TIA. Knowing it can save a life. TIA symptoms are neurological. They reflect whichever part of the brain has been briefly deprived of blood. They come on suddenly and without warning. The key word is sudden.

If you see any of these signs, call 000 immediately. Do not wait. Do not drive to hospital. Every minute matters.

F — Face. Sudden drooping or weakness on one side. Ask the person to smile. Is it uneven?
A — Arms. Sudden weakness or numbness in one arm. Can they raise both arms and hold them there?
S — Speech. Slurred, confused, or absent speech, even briefly.
T — Time. Call emergency services immediately. Do not wait to see if symptoms resolve.

Other warning signs include sudden loss of vision in one eye, double vision, severe unexplained dizziness, or sudden loss of coordination. Even if everything resolves on the way to hospital, urgent assessment is still essential. A TIA that has passed is still a TIA.

What Investigations Will I Have?

The purpose of investigation after a stroke or TIA is not simply to confirm what happened. It is to find out why, because the answer determines the treatment. Your medical team will want to move through this quickly, often within the first 24 to 48 hours.

Brain imaging: MRI and CT

The first priority is imaging the brain. A CT scan is often performed first in the emergency setting because it is fast and widely available, and can quickly exclude a bleed in the brain. An MRI scan follows when possible, as it is more sensitive. MRI can identify whether any permanent damage has occurred, and can also reveal older areas of reduced blood flow that may point to the underlying cause.

When the MRI shows multiple small areas of damage scattered across different parts of the brain, this is a strong signal that clots are being released from somewhere into the circulation, often from the heart. Finding that source becomes the priority.

Carotid artery ultrasound

The carotid arteries run up either side of the neck and supply blood directly to the brain. A build-up of fatty plaque in these arteries, called carotid stenosis or narrowing, is one of the most common and treatable causes of stroke and TIA.

A carotid Doppler ultrasound is a simple, painless scan that measures blood flow through these arteries. If significant narrowing is found on the side corresponding to your symptoms, a procedure to clear or widen the artery may be recommended, and the evidence for doing this promptly after a TIA is strong.

Heart rhythm monitoring: finding atrial fibrillation

Atrial fibrillation, or AF, is responsible for approximately one in five strokes. AF is an irregular heart rhythm in which the heart beats chaotically rather than in a coordinated fashion. When this happens, blood can pool in a small pouch in the left side of the heart called the left atrial appendage, forming a clot that can then travel to the brain.

The challenge is that AF often comes and goes rather than being present all the time. This means a standard ECG, which records the heart rhythm for only a few seconds, may look entirely normal even in someone who has AF. Longer-term monitoring is often needed to catch it.

Monitor Type	How Long It Records	What It Detects
Standard ECG	A few seconds	AF present at the exact moment of recording
Holter monitor	24 to 48 hours	AF that comes and goes over a day or two
Patch monitor	Up to 14 days	Infrequent AF that short monitoring misses
Implantable loop recorder	Up to 3 years	Very infrequent or hidden AF, highest sensitivity

When longer-term monitoring is needed

Sometimes a Holter or patch monitor comes back normal, but the clinical picture still strongly suggests the heart is the source of the problem. This is particularly the case when MRI has shown multiple small areas of damage in different parts of the brain, which points toward clots originating from a single source (often the heart) and being carried through the circulation.

In this situation, your specialist may recommend an implantable loop recorder. It is a small device, roughly the size of a USB stick, placed just beneath the skin of the chest under local anaesthetic in a minor procedure. It monitors the heart rhythm continuously for up to three years, transmitting data wirelessly to your cardiologist.

Studies have shown that prolonged monitoring with a loop recorder detects AF in a significant proportion of patients whose stroke initially had no clear cause. Finding AF months or even years after the original event still matters enormously, because it changes treatment from antiplatelet therapy to anticoagulation and substantially reduces the risk of a further stroke.

If your specialist has recommended a loop recorder, this reflects a thorough and proactive approach, not a sign that something has been missed.

Echocardiogram: imaging the heart

An echocardiogram is an ultrasound scan of the heart that shows its structure, function, and valves in detail. After a stroke or TIA, it helps identify whether the heart itself may be the source of a clot.

Conditions that can cause clots to form in the heart include reduced pumping function, valve disease, and a patent foramen ovale, or PFO. This is a small hole between the upper chambers of the heart that is present in around one in four people and that can allow clots to cross directly into the arterial circulation.

When a standard echocardiogram does not provide a clear enough view, a transoesophageal echocardiogram, or TOE, can be performed. A small probe is passed gently down the oesophagus, which sits directly behind the heart, giving a much closer and more detailed image of the heart and the large blood vessel that leaves it.

Blood tests

Blood tests assess cholesterol levels, including LDL, HDL, and triglycerides, along with blood glucose and HbA1c (a measure of your average blood sugar over the past three months) to screen for diabetes. A full blood count looks for conditions that increase the tendency to form clots, such as polycythaemia (an excess of red blood cells) or thrombophilia (an inherited tendency to form clots more readily than normal).

One marker worth asking about specifically is Lp(a), or lipoprotein(a). This is a lesser-known type of cholesterol-related particle that is not included in standard cholesterol tests. It is largely determined by genetics, and elevated levels independently raise the risk of both stroke and heart disease. As targeted therapies for elevated Lp(a) are now becoming available, identifying it early is increasingly meaningful. Read more in our article on lipoprotein(a) and inherited heart risk.

Medications That Reduce the Risk of a Future Stroke

The evidence base for stroke prevention after TIA is strong and well established. Several different classes of medication are used, and starting the right ones promptly is where much of the long-term risk reduction occurs.

The information below describes the main categories used in this setting and explains why each one matters. It is not a recommendation about your specific regimen. The choice of medication, combination, dose, and duration is an individual clinical decision that sits with your neurologist, cardiologist, and treating team.

Blood-thinning medications

Blood-thinning medications fall into two main groups, and they work in different ways. Antiplatelet medications, such as aspirin and clopidogrel, reduce the tendency of platelets (the tiny blood cells involved in clot formation) to stick together. Anticoagulants, such as warfarin and the newer direct oral anticoagulants (DOACs) including apixaban and rivaroxaban, work further along the clotting pathway and are more effective at preventing clots formed inside the heart.

Which group is used depends on the cause of the stroke or TIA. After a stroke or TIA not caused by atrial fibrillation, antiplatelet therapy is generally the cornerstone. In some situations, particularly the high-risk period immediately after a TIA, a second antiplatelet agent may be added for a defined period of time. Whether one or two agents are used, and for how long, is a careful clinical judgement made by your treating team based on the specific cause and your individual risk profile.

If atrial fibrillation is identified as the cause, the approach changes. Anticoagulants are generally more effective than antiplatelets in this setting because they target clots formed in the heart. Most patients with AF who would have once been treated with warfarin are now treated with a DOAC instead, since DOACs are generally easier to take, do not require regular blood tests for monitoring, and have a favourable safety profile. The choice of agent, the timing of starting it after the event, and the balance against any bleeding risk are decisions made by your specialist team.

Blood pressure treatment

High blood pressure is the single most important modifiable risk factor for stroke. Even modest, sustained reductions in blood pressure translate into meaningful reductions in the risk of a recurrent event.

ACE inhibitors are one class of blood pressure medication often used in this setting. The landmark PROGRESS trial showed a significant reduction in recurrent stroke with ACE inhibitor-based therapy after a first stroke or TIA, even in patients whose blood pressure was not markedly elevated. The benefit appeared to extend beyond simple blood pressure lowering. Several other classes of blood pressure medication are also effective, and the right combination for you depends on your other conditions and is a decision for your treating team.

Statins and cholesterol management

Statin therapy is often part of long-term care after a stroke or TIA, sometimes regardless of the baseline LDL cholesterol level. Statins do more than lower cholesterol. They stabilise arterial plaque, reduce inflammation in blood vessel walls, and lower the risk of future events through mechanisms that go beyond simple lipid reduction.

Lp(a) deserves specific mention here too. Standard lipid panels do not routinely include it, yet elevated Lp(a) is an independent risk factor for stroke and coronary artery disease. If your Lp(a) has not been checked, it is worth raising with your doctor, particularly as targeted therapies are becoming available.

Lifestyle Changes That Make a Meaningful Difference

Medications work best alongside genuine lifestyle change. The combination is more powerful than either alone.

Stop smoking

The single highest-impact change available, if relevant to you. Your doctor can help with cessation support and prescription options.

Move daily

Regular walking counts. Small and consistent beats occasional and intense, and 30 minutes most days is a realistic starting target.

Eat Mediterranean

A Mediterranean-style diet has the strongest evidence base for both heart and brain health. Olive oil, vegetables, legumes, oily fish, nuts.

Check your blood pressure

A home monitor is a small investment with a large payoff. Knowing your numbers makes the conversation with your doctor far more useful.

Stay engaged with your team

Long-term follow up matters. Knowing your medications, your targets, and what to ask at each appointment keeps you in control of the plan.

Protect your sleep

Poor sleep raises blood pressure and stress hormones. If snoring or daytime tiredness is significant, ask about obstructive sleep apnoea.

These do not all need to happen at once. Starting with the highest-impact change first, usually blood pressure control or smoking cessation if relevant, and building from there is both realistic and effective.

Heart Matters Resource

When in Doubt, Get Checked Out

If you or someone with you develops sudden facial drooping, arm weakness, speech difficulty, or any other sudden neurological symptom, even one that resolves quickly, call 000 immediately. Do not drive to hospital. Do not wait to see if things improve. A TIA that has passed is still a TIA, and the window for intervention is narrow.

Read: When in Doubt, Get Checked Out →

Questions to Discuss With Your Doctor

Knowing which questions to ask puts you in a much stronger position at every appointment. Here are the ones that matter most after a stroke or TIA:

What do you think caused my event, and what investigations are being arranged to find out?
Has my MRI shown any pattern that suggests clots from a cardiac source?
Do I need longer-term heart monitoring, and which type would you recommend?
Which medications am I starting, and what does each one do?
What are my blood pressure and LDL cholesterol targets?
Has my Lp(a) been checked, and if not, should it be?
What is the most important lifestyle change for me to prioritise first?

Conclusion

A stroke or TIA is serious, but it is also one of the most actionable events in medicine. The investigations that follow are not just about understanding what happened. They are about finding the specific, treatable causes that can be addressed.

The people who navigate this best are those who understand what happened, engage fully with the investigation process, and commit to the long-term prevention plan their team puts in place. That is not a passive role. It is an active one, and it makes a real and measurable difference.

Hypertrophic Cardiomyopathy: What HCM Actually Means

May 13, 2026

Most people with HCM live completely normal lives. Here is what the diagnosis means, what monitoring is needed, and why the outlook is better than most expect.

Alcohol and the Heart: What the Evidence Actually Shows

May 31, 2026May 12, 2026

Key Points

The evidence on alcohol and cardiovascular health has shifted significantly in recent years. The previously held view that moderate drinking was cardioprotective is now seriously questioned.
Alcohol raises blood pressure, is a significant trigger for atrial fibrillation, contributes to weight gain, and in higher quantities causes alcoholic cardiomyopathy, direct damage to the heart muscle.
Current evidence suggests there is no reliably “safe” level of alcohol consumption from a cardiovascular standpoint, though the absolute risk from light drinking remains low for most people.
The takeaway is not blanket abstinence. It is honest awareness of what alcohol does to the heart, and making informed choices about how much and how often.
For people with established AF, heart failure, hypertension, or cardiomyopathy, alcohol is a topic worth raising directly with their cardiologist.

Alcohol is one of the most common topics that comes up in cardiology consultations, and one where the advice has changed more than patients often realise. For years, the “J-curve” hypothesis held that moderate drinking, a glass or two of red wine a day, was actually protective for the heart. That idea shaped public perception deeply. Many patients arrive in clinic believing that their nightly glass of wine is, if anything, good for them.

The evidence base has shifted considerably. The J-curve has been substantially challenged by more rigorous epidemiological methods, and the current picture is more nuanced and more cautionary than the simple message that “moderate drinking is fine.” That does not mean the message is now blanket abstinence, but it does mean the conversation is worth more than a reassuring wave.

This article is about the honest picture: what alcohol actually does to the cardiovascular system, where the evidence is strong and where it is uncertain, and what that means practically for people who drink regularly and care about their heart health.

What Alcohol Does to the Cardiovascular System

Blood pressure

The most consistent cardiovascular effect of regular alcohol consumption is its impact on blood pressure. Even moderate regular drinking raises blood pressure, and the relationship is dose-dependent. This is not a small or theoretical effect. In someone with borderline hypertension, regular alcohol can be the difference between needing medication and not. In someone already on antihypertensive therapy, regular drinking can undermine the treatment.

Hypertension is one of the most important modifiable cardiovascular risk factors. Anything that reliably raises blood pressure is worth attention, and alcohol does this reliably.

Atrial fibrillation

The relationship between alcohol and atrial fibrillation is one of the strongest and most clinically important in cardiology. Alcohol is a direct trigger for AF episodes in susceptible individuals. The “holiday heart” phenomenon, in which AF occurs during or after heavier drinking, is well documented and reflects acute alcohol toxicity to the cardiac conduction system.

Beyond acute episodes, regular alcohol consumption is an independent risk factor for developing AF. It increases both the incidence of new AF and the recurrence rate in patients who have already been cardioverted or ablated. For patients with AF, this is not a peripheral concern. It is directly relevant to their arrhythmia burden and their stroke risk.

Weight and metabolic effects

Alcohol is energy-dense, approximately 7 calories per gram, almost as much as fat. It contributes to weight gain both directly and indirectly, by reducing dietary restraint and increasing appetite. Excess weight is itself a cardiovascular risk factor and a driver of sleep apnoea, insulin resistance, and dyslipidaemia. The contribution of alcohol to the metabolic picture is frequently underestimated by people who track their food intake but not their drinking.

Alcoholic cardiomyopathy

With sustained heavy drinking over years, direct toxic damage to the heart muscle produces alcoholic cardiomyopathy, a dilated and weakened left ventricle with reduced ejection fraction. This is reversible in its early stages with complete abstinence, but can progress to irreversible heart failure. It is one of the most important reversible causes of dilated cardiomyopathy, and is frequently under-recognised because drinking history is not always volunteered or asked about in detail.

The resveratrol myth

The specific cardioprotective reputation of red wine rested partly on resveratrol, a polyphenol in grape skins that showed promising cardiovascular effects in laboratory studies. The problem is that the concentrations needed to produce these effects in humans are orders of magnitude higher than what a glass of red wine provides. The resveratrol hypothesis has not held up in human trials. The cardiovascular benefits attributed to moderate red wine drinking are now more plausibly explained by confounding. Moderate drinkers tend to have healthier lifestyles overall, rather than the wine itself conferring any specific benefit.

The J-Curve: What It Was and Why It Has Been Challenged

The J-curve referred to the observation in older epidemiological studies that moderate drinkers had lower rates of cardiovascular events than both heavy drinkers and abstainers, suggesting a protective effect at low to moderate intake. This was the basis of the “a glass of wine is good for your heart” message.

The problem identified by more recent research using Mendelian randomisation, a method that uses genetic variants to eliminate confounding, is that the abstainer group in older studies was contaminated by “sick quitters”. These were people who had given up alcohol because of poor health, which made the abstainer group look sicker than it truly was. When this is corrected for, the J-curve largely disappears. The most rigorous current evidence suggests a linear or near-linear relationship between alcohol intake and cardiovascular risk, with no clearly protective threshold.

If you are drinking regularly and have high blood pressure or atrial fibrillation, the alcohol is not helping. In many cases it makes the underlying condition considerably harder to manage.

Professor Peter Barlis, Interventional Cardiologist

What This Means Practically

If you have…	What alcohol does	The conversation worth having
High blood pressure	Raises BP directly, undermines medication	Reducing alcohol may lower BP meaningfully without any other change
Atrial fibrillation	Triggers episodes, increases recurrence after cardioversion or ablation	Reducing or stopping alcohol is one of the most impactful AF management steps available
Heart failure	Depresses heart muscle contractility acutely. Alcoholic cardiomyopathy if sustained	Many cardiologists recommend abstinence in this setting. The specifics are worth discussing with your own doctor
No established cardiac disease	Raises BP dose-dependently. Increases AF risk at higher intakes	Awareness and moderation are the practical levers. Appropriate levels for your individual circumstances are a conversation with your doctor

A Note on Guidelines and Moderation

Alcohol guidelines exist across most countries but vary considerably by country, by sex, by age, and by individual health circumstances. Rather than quoting specific numbers that may not apply to your situation, the more useful message is this: moderation matters, and alcohol-free days matter.

A common practical starting point discussed in clinic is at least three alcohol-free days per week. Beyond that, the right level for any individual depends on their sex, weight, underlying health conditions, medications, and family history. This is why the more specific conversation belongs with your own doctor rather than in a general article.

If you drink regularly, an honest conversation with your healthcare professional about your drinking is one of the more useful discussions available to anyone managing a cardiovascular condition. Many people are surprised to find that reducing alcohol has a more significant impact on their blood pressure, their AF burden, or their weight than they expected, often more than other interventions they have been working hard on.

A note for people of East Asian background

An estimated 30 to 50 percent of people of East Asian heritage, including Japanese, Chinese, and Korean populations, carry a variant of the aldehyde dehydrogenase gene (ALDH2) that impairs alcohol metabolism. This produces the characteristic flushing reaction after alcohol (the “Asian flush”), and is associated with higher concentrations of the toxic intermediate acetaldehyde. Because acetaldehyde itself has direct effects on the cardiovascular system, the case for keeping intake low is particularly relevant for people who experience this flushing reaction.

Practical Steps Worth Considering

If you have hypertension, two to three alcohol-free weeks followed by a blood pressure check can be a useful experiment. The change is often meaningful and immediate.
If you have AF, keeping a diary of episodes and their relationship to drinking occasions can make the pattern clearer.
Building at least three alcohol-free days into each week, framed as a practical habit rather than deprivation, supports cardiovascular health.
Being honest about how much you are actually drinking matters. A restaurant pour of wine is typically considerably more than a standard drink measure, and the gap between perceived and actual intake is frequently significant.
For anyone concerned about their drinking or finding reduction difficult, a GP is a good starting point for a non-judgemental conversation.

Heart Matters Resource

When in Doubt, Get Checked Out

If you drink regularly and have high blood pressure, AF, or heart failure, a direct conversation with your cardiologist about alcohol is one of the more valuable discussions you can have. The impact on your condition may be greater than expected.

Read: When in Doubt, Get Checked Out →

Conclusion

The comfortable message that moderate drinking is heart-protective has not survived more rigorous scientific scrutiny. The current honest picture is that alcohol raises blood pressure reliably, triggers AF in susceptible individuals, and contributes to weight and metabolic risk, with no clearly protective threshold that modern evidence supports.

That does not mean the right answer for everyone is abstinence. For most people who drink lightly and have no established cardiovascular disease, the absolute risk is low and the conversation is about informed awareness rather than prohibition. For people managing hypertension, AF, or heart failure, alcohol is a modifiable factor that is frequently underestimated in its contribution to their condition.

The most useful thing this article can do is prompt that conversation. Honestly, without judgement, and with the clinical specificity it deserves.

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Medications That Reduce the Risk of a Future Stroke

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Statins and cholesterol management

Lifestyle Changes That Make a Meaningful Difference

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What Alcohol Does to the Cardiovascular System

Blood pressure

Atrial fibrillation