Evidence-backed eating patterns
Mediterranean diet
An eating pattern based on the traditional cuisines of countries bordering the Mediterranean Sea: mainly vegetables, fruit, pulses, wholegrains, nuts and olive oil, with moderate fish, dairy and poultry, and little red meat or processed food.
What people typically eat
Vegetables, fruit, beans, lentils, wholegrains, nuts, seeds and olive oil at most meals; fish and seafood regularly; moderate poultry, eggs, cheese and yoghurt; red meat and sweets only occasionally.
What is restricted
Nothing is banned outright, but red and processed meats, refined grains, added sugars and highly processed foods are kept to a minimum.
Why people try it
People choose it for heart health, general longevity, type 2 diabetes prevention and sustainable, enjoyable weight management.
Realistic advantages
- Strong and consistent evidence for reducing cardiovascular disease risk
- Flexible and enjoyable, which makes long-term adherence realistic
- No food groups are eliminated, so nutritional deficiencies are unlikely
- Aligns closely with NHS and World Cancer Research Fund healthy-eating advice
Realistic disadvantages
- Weight loss is not automatic, portions and calories still matter
- Olive oil, nuts, fish and fresh produce can raise the weekly food bill
- Requires cooking and planning rather than convenience foods
Strength of evidence
Strong evidence
Backed by large randomised trials (including PREDIMED) and decades of cohort research for cardiovascular and metabolic outcomes.
Key studies
Likely cost and difficulty
Moderate cost; moderate difficulty, mostly a cooking and shopping-pattern change.
Nutritional risks
Very low. One of the most nutritionally complete patterns studied.
Who should avoid it
No specific group needs to avoid it; adapt for allergies or medical diets as needed.
Is professional supervision advisable?
Not usually required. A dietitian can help tailor it to medical conditions.
References
Written by the Slimr editorial team. How we review diets.
