Nutrition

Heart-Healthy Diet: Complete Evidence-Based Guide

Diet is one of the most powerful tools for preventing heart disease and lowering cholesterol. This guide tells you exactly what to eat — and what the evidence actually shows.

Best pattern
Mediterranean diet
LDL reduction from diet
10–20%
Reduces risk by
Up to 30% (Mediterranean)
Key test
Lipid profile

The Mediterranean Diet — The Gold Standard

The largest cardiovascular trials (PREDIMED) show the Mediterranean diet reduces major cardiovascular events by 30% compared to a low-fat diet. It's the most evidence-backed dietary pattern for heart health.

Food CategoryMediterranean Approach
Vegetables≥5 portions daily — make up most of each plate
Fruit2–3 portions daily
Olive oilMain cooking fat — 3–4 tablespoons/day in trials
Fish≥2 portions/week (particularly oily fish)
NutsHandful (30g) daily
Legumes3+ times/week
Red meat<2 portions/week
Processed meatMinimal or avoid
Ultra-processed foodMinimise
AlcoholMax 1–2 units/day — red wine specifically in moderate amounts

Foods That Lower LDL Cholesterol

FoodLDL ReductionHow Much Needed
Oats / beta-glucan5–10%3g beta-glucan daily (40g oats)
Plant sterols/stanols10–15%2g/day (fortified foods)
Almonds4–5%43g (small handful) daily
Soya protein3–4%25g soya protein daily
Psyllium husk5–10%10–12g daily
Olive oil (replacing saturated fat)5–10%As main cooking fat
After a Heart AttackFollowing a heart attack, the priority diet goals are: strict Mediterranean diet, omega-3 rich fish 2–3×/week, avoid trans fats completely, reduce saturated fat to <7% of calories, and work with a cardiac dietitian.

Foods to Avoid for Heart Health

Is coconut oil healthy for the heart?
No robust evidence supports this claim. Coconut oil is 90% saturated fat — it raises LDL cholesterol. Use olive oil instead.
Does dietary cholesterol (eggs) raise blood cholesterol?
For most people, dietary cholesterol has minimal effect on blood cholesterol — it's saturated and trans fat that matter most. Eggs (in moderation, ≤7/week) are not significantly harmful for most people.
Can diet alone replace statins?
Diet can reduce LDL by 10–20% — comparable to a low-dose statin. For people with established heart disease or high risk, statins are usually still needed. Diet should complement, not replace, medication where indicated.
Medical Disclaimer: This page is for general education only and does not replace professional medical advice. Always consult a qualified healthcare provider.