The Mediterranean Diet and Heart Health
By Dr Nabila Laskar — published December 2024.
Evidence-based nutrition guidance for cardiovascular disease prevention.
Why the Mediterranean Diet?
Of all dietary patterns, the Mediterranean diet has the strongest scientific evidence for cardiovascular disease prevention. Large trials including PREDIMED show a 25–30% reduction in heart attack, stroke and cardiovascular death. It is not a fad — it is a sustainable, enjoyable way of eating based on traditional dietary patterns of Greece, Southern Italy and Spain.
Core Principles
Emphasise plant foods (vegetables, fruits, whole grains, legumes, nuts, seeds) — aim for 7–10 servings of fruit and vegetables daily. Prioritise healthy fats: olive oil as the primary fat, plus nuts, seeds and oily fish; limit saturated fats and avoid trans fats. Moderate animal products and minimise ultra-processed foods, sugary drinks and refined carbohydrates.
The Evidence
The PREDIMED study (2013) randomised 7,447 high-risk participants to a Mediterranean diet (with extra-virgin olive oil or nuts) versus a low-fat diet. After 5 years there was a 30% reduction in cardiovascular events and a 49% reduction in stroke — even in people not losing weight. The Lyon Diet Heart Study in heart attack survivors showed a 70% reduction in recurrent heart attacks and a 45% reduction in total mortality.
Daily and Weekly Foundations
Daily: at least 5 servings of vegetables, 2–3 fruits, 3–6 servings of whole grains, 2–4 tablespoons of olive oil, a handful of nuts, and legumes on most days. Weekly: 2+ servings of fish (especially oily), 2–3 servings of poultry, 2–4 eggs, moderate dairy (yoghurt and small portions of cheese). Occasional: red meat 1–2 times a month; sweets reserved for special occasions; wine optional and in moderation.
Foods to Minimise
Processed meats (bacon, sausages, deli meats); refined grains (white bread, white pasta, white rice); added sugars and sugary drinks; highly processed snack foods; butter and cream (use olive oil instead).
Beyond Food: The Mediterranean Lifestyle
Mindful, social eating with family and friends; regular daily physical activity (walking, gardening, active recreation); adequate rest and sleep; and strong social connections. These lifestyle factors likely contribute to the cardiovascular benefits observed in Mediterranean populations.