The Mediterranean diet is consistently ranked as the world's best diet by nutrition scientists and dietitians. Unlike most diets, it was not invented by a nutritionist — it emerged from observing the eating patterns of populations in southern Europe (Greece, Italy, Spain) who had notably low rates of heart disease and longer lifespans.

What makes the Mediterranean diet different?

Rather than eliminating food groups or counting calories, the Mediterranean diet emphasises food quality and eating patterns. It is not a strict set of rules — it is a flexible framework built around whole, minimally processed foods.

What to eat on the Mediterranean diet

Eat abundantly (every day)

  • Vegetables: A wide variety — aim for 5+ servings per day
  • Fruits: 2–3 servings per day
  • Whole grains: Whole wheat bread, brown rice, pasta, oats, quinoa
  • Legumes: Lentils, chickpeas, beans — at least 3 times per week
  • Nuts and seeds: Almonds, walnuts, sunflower seeds — a small handful daily
  • Olive oil: The primary cooking fat — 2–4 tablespoons per day
  • Herbs and spices: Garlic, basil, oregano, rosemary — instead of salt

Eat regularly (several times per week)

  • Fish and seafood: Especially oily fish (salmon, sardines, mackerel) — at least 2 times per week
  • Poultry: Chicken and turkey
  • Eggs: Up to 4–7 per week
  • Dairy: Cheese and yoghurt in moderate amounts

Eat sparingly (occasionally)

  • Red meat: No more than 1–2 times per week
  • Sweets and desserts: Reserved for special occasions

Minimise or avoid

  • Ultra-processed foods
  • Refined grains (white bread, pastries)
  • Added sugars and sugary drinks
  • Processed meats (sausages, bacon)

The science — what does the research show?

Cardiovascular disease

The PREDIMED study — one of the largest nutrition trials ever conducted — found that following a Mediterranean diet supplemented with olive oil or nuts reduced major cardiovascular events by approximately 30% compared to a low-fat diet. The evidence for cardiovascular protection is the strongest of any dietary pattern.

Type 2 diabetes

Multiple randomised controlled trials show the Mediterranean diet improves insulin sensitivity, reduces fasting blood glucose, and lowers HbA1c — a marker of long-term blood sugar control — more effectively than low-fat diets.

Brain health

Higher adherence to the Mediterranean diet is associated with slower cognitive decline, reduced risk of Alzheimer's disease, and better mental health outcomes in multiple large cohort studies.

Weight management

While not specifically designed for weight loss, the Mediterranean diet consistently produces modest weight loss in overweight individuals because it is high in fibre and protein, both of which increase satiety.

Why is olive oil so important?

Extra virgin olive oil (EVOO) is the cornerstone of the Mediterranean diet. It is rich in oleocanthal — a polyphenol with anti-inflammatory effects comparable to ibuprofen — and oleic acid (a monounsaturated fat that improves LDL cholesterol profiles). Studies show that replacing saturated fats with olive oil significantly reduces cardiovascular risk.

How to transition to a Mediterranean diet

  1. Week 1: Switch cooking oil to olive oil. Add a vegetable to every meal.
  2. Week 2: Add 2 fish meals per week. Replace white bread with whole grain.
  3. Week 3: Add legumes to 3 meals per week. Add a daily handful of nuts.
  4. Week 4: Reduce red meat to once per week. Replace desserts with fruit.
Find your calorie target: The Mediterranean diet works best when combined with a calorie target appropriate for your goal. Use our Calorie Calculator to find yours, then apply Mediterranean food choices to hit it.

Sample Mediterranean day

  • Breakfast: Greek yoghurt with berries, walnuts, and a drizzle of honey
  • Lunch: Large salad with roasted vegetables, chickpeas, feta, olive oil dressing — with whole grain bread
  • Snack: Apple with a small handful of almonds
  • Dinner: Grilled salmon with roasted courgette, tomatoes, garlic, and quinoa