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How to Read a Food Label: A Heart Healthy Guide

Food packaging is designed to grab your attention with bold claims, colours, and feel-good phrases. But turn the packet around and you’re often met with a wall of numbers, percentages, and unfamiliar ingredients. Trying to make a healthy choice? It’s no wonder so many people feel overwhelmed.

Many of us want to eat better, but between inconsistent serving sizes, shrinking packaging, and confusing nutrition panels, knowing where to start can be tricky. This guide is here to help you cut through the clutter and make more informed choices that support your heart health.

 

What to look for (and why it’s not always obvious)

Start with the ingredients list

The ingredients list is one of the most important parts of the label. Ingredients are listed by weight, so the first few items make up most of what you’re eating.

  • Look for whole foods near the top like oats, wholemeal flour, legumes, or vegetables
  • Be cautious if sugar, salt, or refined oils appear early
  • Watch for long lists filled with additives or numbers

 

If it’s not something you’d use in your own kitchen, it might be better left on the shelf.

 

Watch for trans fats even when it says “0g”

Trans fats are artificial fats linked to increased cholesterol and a higher risk of heart disease. Many countries have banned them, but they still appear in some baked goods, snacks, and spreads.

Labels can legally say “0g” if the amount per serve is less than 0.5g — so always check for “partially hydrogenated oils” in the ingredients list.

 

Even small amounts of trans fats, eaten regularly, can have long term effects on heart health.

 

Ultra processed doesn’t mean ultra healthy

Not all processing is bad. But ultra processed foods are often stripped of nutrients and packed with additives, refined starches, added sugars, and industrial oils.

They may be sold as “healthy,” “high protein,” or “plant based,” but that doesn’t mean they’re good for your heart.

  • Look out for long ingredient lists with numbers and chemical-sounding names
  • Common additives include stabilisers, emulsifiers, and artificial flavour enhancers

 

If it looks like a health food but reads like a lab experiment, it’s worth reconsidering.

 

The fibre letdown

Fibre is one of the most underrated nutrients for heart health. It helps manage cholesterol, supports digestion, and keeps you feeling full. But many “high fibre” claims are misleading.

Some cereals or breads contain just 2g of fibre per serve — not enough to make a difference. Aim for at least 3g per serve, ideally 5g or more.

  • Rolled oats
  • Legumes like lentils and chickpeas
  • Wholegrain or seeded bread
  • Fresh fruit and vegetables (with skin)

 

Don’t rely on the front of the box, always check the actual numbers on the back.

 

Salt and sugar: The quiet contributors

Salt (sodium) and added sugars are often hidden in everyday foods — even savoury ones like sauces, crackers, and dressings.

Sodium:

  • Under 120mg per 100g = low
  • Over 400mg = high

Sugar: Watch for names like glucose, fructose, malt syrup, or corn syrup. High fructose corn syrup in particular has been linked to weight gain and metabolic stress.

If sugar appears in the first few ingredients, the product likely contains more than you need — even if it doesn’t taste sweet.

 

Serving sizes can be misleading

Many products list serving sizes that don’t reflect how people actually eat. A small bottle may say “2 serves,” even though most people would drink it in one go.

To compare products fairly, use the per 100g column — it’s a consistent way to spot which item has less salt, sugar, or saturated fat.

 

Ignore the marketing on the front. The real truth is in the per 100g values on the back.

 

Conclusion

Food labels aren’t always straightforward, but learning how to read them can give you real power to make better decisions, one choice at a time. Start with the ingredients list. Keep an eye out for added sugars, trans fats, and health claims that sound impressive but say very little. Take a moment to compare fibre and salt content between products, those small steps add up. You don’t need to get it perfect. Even small improvements, made consistently, can support a healthier heart and better quality of life over time. One final tip – using a food tracking app. Many of these apps allow you to scan a barcode and instantly see a breakdown of nutrients, ingredients, and portion sizes. They can be a useful tool for cutting through some of the confusion and helping you make more informed food choices, especially when you’re short on time.

About the author
RN & Associate Editor

Kathy Marinias, RN, is Associate Editor at Heart Matters and brings over 30 years of nursing experience with a deep commitment to patient-centred care and empowerment. With more than 15 years in nursing leadership and administration, she offers a unique perspective that bridges frontline clinical insight with system-level understanding. At Heart Matters, Kathy presents a fresh and practical overview of key lifestyle, health, and wellness topics, helping readers take proactive steps toward better heart health and overall wellbeing.

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other anti-anginals

When first-line therapies for angina, such as beta blockers, calcium channel blockers, and nitrates, prove inadequate or are not well-tolerated, second-line therapies may be considered.
Perhexiline is a unique medication that enhances the heart's ability to utilize fatty acids for energy, reducing its reliance on oxygen and lowering oxygen demand. This action helps improve blood flow and alleviates chest pain in some patients with refractory angina.
Nicorandil is another second-line option with a dual mechanism of action. It opens potassium channels in smooth muscle cells, causing vasodilation and enhancing coronary blood flow. Additionally, nicorandil also stimulates nitric oxide release, further dilating blood vessels and reducing heart workload.
Trimetazidine is an anti-ischemic agent that improves cardiac efficiency by enhancing glucose metabolism and shifting the heart's energy production to a more oxygen-efficient process. As second-line therapies, these medications offer alternative approaches for managing angina in individuals who do not respond adequately to first-line treatments or those experiencing side effects from other medications.

lipid lowering therapies

Lipid-lowering therapies are essential in managing coronary artery disease (CAD), a condition where the arteries supplying blood to the heart become narrowed. Among the most commonly prescribed treatments are statins, which reduce cholesterol production in the liver and significantly lower the risk of heart attacks and strokes.

Other medications may be used to target different aspects of lipid metabolism:

  • Ezetimibe helps reduce the absorption of cholesterol in the gut
  • Fibrates lower triglyceride levels
  • Niacin can help raise high-density lipoprotein (HDL) cholesterol

In recent years, a newer class of medications known as PCSK9 inhibitors—such as Repatha (evolocumab)—has become available. These drugs block a specific enzyme involved in cholesterol regulation and can dramatically lower LDL cholesterol, particularly in patients who do not achieve target levels with statins alone.

Together, these therapies provide a range of options to personalise treatment and improve cardiovascular outcomes.

Nitrates

Nitrates for Angina Relief

Nitrates are widely used to treat angina and provide quick relief from chest pain. These medications are commonly available as sublingual sprays or tablets, skin patches, and long-acting tablets.

Nitrates work by dilating blood vessels, allowing for increased blood flow and reduced vascular resistance. This reduces the heart’s workload and lowers its oxygen demand, offering prompt relief from angina symptoms.

Sublingual nitrates act quickly and are typically used at the onset of angina symptoms, while patches and long-acting tablets are used for ongoing prevention.

Common side effects include headaches, dizziness, and flushing. These often improve with continued use but should be discussed with a healthcare provider if persistent or bothersome.

calcium channel blockers

Calcium channel blockers, including amlodipine, felodipine, Cardizem (diltiazem), and verapamil, are commonly prescribed for the treatment of angina.

These medications work by inhibiting the influx of calcium into the muscle cells of the heart and blood vessels, causing them to relax. This relaxation leads to the widening of blood vessels, which improves blood flow and reduces blood pressure.

For individuals with angina, calcium channel blockers reduce the heart’s workload and oxygen demand, helping to relieve chest pain and prevent angina episodes.

While effective, they may cause side effects such as headaches, dizziness, facial flushing, and ankle swelling. These effects should be monitored and discussed with your healthcare provider if they persist.

Beta blockers

Beta blockers, such as metoprolol, propranolol, atenolol, carvedilol, and bisoprolol, play a crucial role in managing angina.

These medications work by blocking specific receptors in the heart, which slows the heart rate and reduces the strength of each contraction. This results in a lower oxygen demand by the heart and helps relieve chest pain associated with angina.

Beta blockers are highly effective in both relieving symptoms and preventing angina episodes. However, they may cause side effects in some individuals, including tiredness, worsened asthma symptoms, more vivid dreams, and erectile dysfunction in some males.

It is important to consult your healthcare provider to determine whether beta blockers are a suitable option for your angina and overall heart health.

Anti-platelet Medications

Anti-platelet medications play a crucial role in preventing blood clot formation and reducing the risk of serious cardiovascular events such as heart attacks and strokes. Commonly used agents include aspirin, clopidogrel, and ticagrelor.

 

Aspirin: This well-known medication inhibits platelet activation, reducing the likelihood that platelets will clump together and form clots. It is widely used for both primary and secondary prevention of heart attacks and strokes.

 

Clopidogrel: A potent anti-platelet agent, clopidogrel works by blocking specific receptors on platelets to prevent aggregation. It is commonly prescribed for patients with acute coronary syndrome, those undergoing stent placement, and some individuals with peripheral arterial disease.

 

Ticagrelor: Ticagrelor also inhibits platelet activation and is typically used in the treatment of acute coronary syndrome. It is often prescribed alongside aspirin to provide dual anti-platelet therapy and further reduce the risk of heart-related events.