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Nutrition for cardiovascular diseases: which foods are beneficial for the heart and blood vessels
Cardiovascular diseases are one of the leading causes of mortality worldwide. However, many of them can be prevented or alleviated by making lifestyle changes and paying special attention to nutrition. A balanced diet helps reduce the risks of heart attacks, strokes, hypertension, and other heart-related problems. Let’s explore which foods should be included in your daily diet and which ones should be avoided.
How nutrition affects heart health
What we eat has a direct impact on the cardiovascular system. Foods rich in healthy fats, fibre, vitamins, and antioxidants help regulate cholesterol levels, maintain normal blood pressure, and support blood vessel elasticity. Conversely, an excess of salt, sugar, and saturated fats leads to atherosclerosis, increased blood pressure, and the development of coronary heart disease.
Key principles of heart healthy nutrition
✅ Variety in diet – include vegetables, fruits, whole grains, fish, nuts, and cold-pressed oils.
✅ Limiting salt and sugar – helps reduce the risk of hypertension.
✅ Controlling fat intake – prioritise unsaturated fats and avoid trans fats.
✅ Adequate fibre consumption – supports healthy cholesterol levels.
✅ Portion moderation – avoid overeating to reduce strain on the heart.
Food that help lower cholesterol
🫐 Berries and fruits – blueberries, raspberries, and pomegranates are rich in antioxidants that protect blood vessels.
🥬 Vegetables and greens – spinach, broccoli, and tomatoes improve circulation.
🌾 Whole grains – oats, buckwheat, and quinoa help lower “bad” cholesterol.
🐟 Fatty fish (salmon, mackerel, sardines) – high in omega-3 fatty acids that strengthen the heart.
🥑 Avocado and nuts – sources of healthy fats that reduce cholesterol plaque formation.
Why it is important to control salt and sugar intake
✅ Salt: Excess salt retains water in the body, increases blood pressure, and strains the heart. The recommended daily limit is no more than 5g (about 1 teaspoon, including hidden salt in processed foods).
✅ Sugar: Excessive sugar consumption contributes to obesity, insulin resistance, and diabetes, increasing the risk of cardiovascular diseases. It’s best to limit sugary drinks, confectionery, and fast food.
Fats: which are beneficial and which should be avoided
✅ Healthy fats (unsaturated):
- Omega-3 – salmon, herring, walnuts, flaxseed oil
- Omega-9 – olive oil, avocado, almonds
🚫 Harmful fats (saturated and trans fats):
- Fatty meats, sausages, fast food, margarine, processed fats
- These fats raise “bad” cholesterol levels and contribute to atherosclerosis.
Vitamins and minerals for a healthy cardiovascular system
💙 Potassium – regulates blood pressure and supports heart rhythm. Sources: bananas, potatoes, oranges.
💙 Magnesium – prevents cramps and supports heart function. Sources: nuts, spinach, seeds.
💙 Vitamin C – strengthens blood vessels. Sources: citrus fruits, kiwi, bell peppers.
💙 Coenzyme Q10 – essential for heart energy metabolism. Sources: fatty fish, whole grains.
Should your avoid coffee and alcohol
☕ Coffee: Moderate consumption (up to 2 cups per day) can be beneficial due to its antioxidants. However, avoid coffee with excessive sugar and cream.
🍷 Alcohol: A small amount of red wine (up to 150ml per day) may have a positive effect on the heart due to polyphenols. However, excessive alcohol intake damages blood vessels and increases the risk of hypertension.
When you should consult a nutritionist
It is advisable to seek professional guidance if:
- You have been diagnosed with cardiovascular diseases and require a personalised diet plan.
- You need to lose or gain weight without harming your heart.
- You take medications that require dietary adjustments.
Heart-protective dietary patterns: what the evidence shows
Large-scale clinical studies consistently identify two evidence-based dietary patterns as most protective for cardiovascular health:
- Mediterranean diet — characterised by high consumption of vegetables, fruit, legumes, whole grains, olive oil, fish, and moderate amounts of nuts and dairy. The PREDIMED trial demonstrated a 30% reduction in major cardiovascular events with a Mediterranean diet supplemented with extra-virgin olive oil or nuts.
- DASH diet (Dietary Approaches to Stop Hypertension) — specifically designed to reduce blood pressure through low sodium, high potassium, calcium, and magnesium intake. Consistently recommended by the American Heart Association for hypertension management.
Both patterns share common principles: emphasis on whole plant foods, healthy unsaturated fats, low processed food intake, and limited sodium and added sugar.
Foods that protect the cardiovascular system
- Fatty fish (salmon, mackerel, sardines, herring) — rich in omega-3 fatty acids (EPA and DHA), which reduce triglycerides, lower inflammation, and reduce arrhythmia risk. Recommended 2–3 servings per week.
- Leafy green vegetables (spinach, kale, Swiss chard) — high in vitamin K, nitrates, and antioxidants that support arterial flexibility and blood pressure regulation.
- Berries (blueberries, strawberries, raspberries) — rich in anthocyanins and flavonoids associated with reduced risk of hypertension and myocardial infarction.
- Whole grains (oats, quinoa, buckwheat) — soluble fibre in oats (beta-glucan) reduces LDL cholesterol by binding bile acids in the gut. Aim for 25–30g of total dietary fibre daily.
- Legumes (lentils, chickpeas, black beans) — lower LDL cholesterol, stabilise blood glucose, and reduce systemic inflammation.
- Nuts (walnuts, almonds, pistachios) — unsaturated fats, fibre, and polyphenols improve lipid profiles. Studies show 28g of nuts daily is associated with 28% lower cardiovascular mortality.
- Extra-virgin olive oil — the primary fat in the Mediterranean diet. Oleocanthal has anti-inflammatory properties similar to low-dose ibuprofen; oleic acid improves HDL function.
- Dark chocolate (70%+ cocoa) — flavanols in cocoa improve endothelial function and reduce blood pressure. A small daily portion (20–30g) is considered cardioprotective.
Foods to limit or avoid for heart health
- Trans fats (partially hydrogenated oils) — raise LDL and lower HDL simultaneously. Found in industrial baked goods, margarine, and some processed snacks. WHO recommends elimination from global food supply.
- Excess sodium (salt) — major driver of hypertension. Most adults consume 2–3× the recommended maximum of 2g (5g salt) per day. Primary sources: bread, processed meats, ready meals, cheese, and restaurant food.
- Added sugar and sugary drinks — associated with hypertriglyceridaemia, obesity, and inflammation. Limit added sugar to <10% of total energy intake (WHO guideline).
- Processed and red meat in excess — associated with increased cardiovascular risk in prospective studies, particularly when processed (bacon, salami, sausages). Limit to <500g red meat per week; minimise processed meat.
- Refined carbohydrates — white bread, pastries, and white rice cause rapid glucose spikes and elevated triglycerides when consumed frequently.
- Alcohol — associated with elevated blood pressure, atrial fibrillation, and cardiomyopathy. If consumed, limit to <1 unit/day for women and <2 units/day for men (though many cardiologists now recommend abstinence).
Practical heart-healthy meal structure
A simple framework for daily cardiovascular nutrition:
- Breakfast: Oatmeal cooked in water or low-fat milk, topped with berries and a tablespoon of ground flaxseed. Green tea.
- Lunch: Grilled or baked salmon with roasted vegetables (courgette, peppers, cherry tomatoes) and wholegrain bread. Olive oil dressing.
- Snack: A small handful of walnuts and an apple.
- Dinner: Lentil soup or stew with leafy green salad (spinach, cucumber, olive oil, lemon). Small serving of dark chocolate after.
This pattern provides adequate omega-3s, fibre, potassium, antioxidants, and healthy fats while limiting sodium, saturated fat, and refined carbohydrates.
👉 If you are interested in a detailed nutrition programme tailored to your health condition, explore the recommendations of the Clinical Dietetics Centre led by Dr Bezugla by requesting a consultation via the link.
Scientific Sources
- Estruch R, et al. “Primary Prevention of Cardiovascular Disease with a Mediterranean Diet.” N Engl J Med. 2018. PubMed 29897866
- Sacks FM, et al. “Dietary Fats and Cardiovascular Disease: A Presidential Advisory From the AHA.” Circulation. 2017. PubMed 28620111
- Appel LJ, et al. “A Clinical Trial of the Effects of Dietary Patterns on Blood Pressure (DASH).” N Engl J Med. 1997. PubMed 9099655
- WHO. “Cardiovascular diseases (CVDs) Fact Sheet.” 2023. WHO Fact Sheet
Clinical Dietitian & Nutritionist · Founder, Center for Clinical Dietetics · MoH Ukraine License №2419/24/М
Evidence-based clinical nutrition specialist with over 15 years of practice. Candidate of Medical Sciences. Research fellow at Deutsches Institut für Ernährungsforschung (DIfE), Potsdam. Consultations in Ukrainian, Russian, English and German.
This article is for educational purposes only and does not substitute individual medical advice. Please consult a qualified healthcare professional before making any dietary changes.