By the Nutriveda editorial team · Sources checked 2026-10-28
The Mediterranean diet is the traditional eating pattern of the olive-growing regions around the Mediterranean Sea: mostly vegetables, fruit, beans, whole grains and nuts, extra virgin olive oil as the main fat, fish a few times a week, and red meat and sweets kept occasional. It is not a branded plan with phases or banned foods. Researchers describe it with a score, and the score is the most useful way to understand it. If you want to start this week, our Mediterranean diet for beginners guide has the foods, how to build a plate and a starter week. This entry is the reference: where the diet comes from, how it is measured, what the evidence shows and who should be careful.
Quick facts
- Type: eating pattern, not a calorie plan.
- Main fat: extra virgin olive oil.
- Base of meals: vegetables, legumes, whole grains, fruit, nuts.
- Often: fish and seafood. In moderation: yogurt, cheese, eggs, poultry. Occasionally: red and processed meat, sweets.
- Strongest evidence: heart and blood vessel health, from randomised trials.
- Recognition: on the UNESCO list of the Intangible Cultural Heritage of Humanity since 2010.
Where the Mediterranean diet comes from
The modern interest started with the Seven Countries Study. Its formal surveys began in 1958, led by the Minnesota physiologist Ancel Keys, and followed middle-aged men in 16 groups in the United States, Finland, the Netherlands, Italy, Greece, the former Yugoslavia and Japan. The study looked at diet and heart disease across very different food cultures, and the rural groups of southern Europe stood out, which brought their way of eating to the attention of researchers.
The diet itself is much older than the study. In 2010 UNESCO added it to its Representative List of the Intangible Cultural Heritage of Humanity, on the nomination of Greece, Italy, Morocco and Spain; Cyprus, Croatia and Portugal joined in 2013. The listing covers the whole culture around food, from seasonal cooking to shared meals, not only the ingredients.
How the Mediterranean diet is measured
Because there is no single official menu, studies measure how closely people eat the Mediterranean way with a score. The best known is the 0 to 9 Mediterranean diet score used in the Greek part of the EPIC study (Trichopoulou, 2003). Each person gets one point for each habit where they are closer to the traditional pattern than the middle of their population:
- more vegetables
- more legumes
- more fruit and nuts
- more cereals
- more fish
- a higher ratio of monounsaturated to saturated fat
- less meat
- less dairy
- moderate alcohol
Two things follow from this. The score is relative, so it compares people with each other, not with a fixed target. And it rewards each step: moving from 3 to 5 points counts, you do not need all 9. The alcohol point is part of the research score, not a reason to start drinking.
Key Mediterranean foods per portion
Most of the fat in this pattern comes from olive oil, nuts and olives. This table shows what a typical portion of each brings, with butter for comparison, because the diet works as a swap, not as an addition.
| Portion | Energy | Total fat | Monounsaturated | Saturated |
|---|---|---|---|---|
| 1 tbsp extra virgin olive oil (13.5 g) | 119 kcal | 13.5 g | 9.9 g | 1.9 g |
| 30 g almonds | 174 kcal | 15.0 g | 9.5 g | 1.1 g |
| 30 g hazelnuts | 188 kcal | 18.2 g | 13.7 g | 1.4 g |
| 10 green olives in brine (27 g) | 39 kcal | 4.1 g | 3.1 g | 0.5 g |
| For comparison: 1 tbsp butter, unsalted (14.2 g) | 102 kcal | 11.5 g | 3.3 g | 7.2 g |
Data: USDA FoodData Central, SR Legacy: “Oil, olive, salad or cooking” (FDC 171413), “Nuts, almonds” (FDC 170567), “Nuts, hazelnuts or filberts” (FDC 170581), “Olives, pickled, canned or bottled, green” (FDC 169096) and “Butter, without salt” (FDC 173430); portions calculated from the values per 100 g, checked 2026-10-22 to 2026-10-25. The 30 g portion of nuts is our choice for comparison, not an official serving. Ten green olives also carry about 421 mg of sodium. Full tables per 100 g are in the entries for olives, almonds and hazelnuts.
What the evidence says
The Mediterranean diet has some of the best evidence of any eating pattern, and most of it is about the heart. These are the studies worth knowing.
| Study | Design and who | Main result |
|---|---|---|
| PREDIMED, Spain (republished 2018) | Randomised trial, 7,447 adults at high cardiovascular risk, median 4.8 years; Mediterranean diet with extra virgin olive oil or with nuts vs advice to cut fat | About 30% fewer heart attacks, strokes and cardiovascular deaths in both Mediterranean groups (hazard ratio 0.69 with olive oil, 0.72 with nuts) |
| Lyon Diet Heart Study, France (1999) | Randomised trial in people after a heart attack, mean follow-up 46 months; Mediterranean-type diet vs a prudent Western diet | 14 cardiac deaths or non-fatal heart attacks in the Mediterranean group against 44 in the control group; adjusted risk ratios for the combined outcomes from 0.28 to 0.53 |
| CORDIOPREV, Spain (2022) | Randomised trial, 1,002 adults with coronary heart disease, 7 years; Mediterranean diet with extra virgin olive oil vs low-fat diet | Major cardiovascular events in 17.3% vs 22.2% of participants; clear in men, not significant in women, who were under a fifth of the group |
| Greek EPIC cohort (2003) | Observational, 22,000+ Greek adults, median 3.7 years | Each 2-point rise on the 0 to 9 score was associated with about 25% lower risk of death from any cause |
How to read this honestly. PREDIMED was retracted and republished in 2018 because randomisation went wrong at some sites; the corrected analysis reached the same conclusion. Lyon and CORDIOPREV were in people who already had heart disease, so they speak about preventing a second event. The Greek study is observational and shows an association, not proof that the diet caused the difference. For heart health the evidence is strong. For other outcomes often linked to this diet, such as cancer, dementia or depression, most studies are observational, and we do not present those links as proven. Our article Mediterranean diet: benefits and risks goes through the wider research, and Mediterranean diet for fatty liver covers the evidence for fatty liver disease (MASLD).
Does the Mediterranean diet help with weight loss?
It is not a weight-loss diet by design, and the main trials above were not run for weight loss. Olive oil and nuts are energy-dense: one tablespoon of olive oil is about 119 kcal. Whether your weight changes depends on how much you eat in total. What the pattern does well is make it easy to fill the plate with vegetables, beans and whole grains, which are filling for the energy they bring. What the weight-loss trials found is in Does the Mediterranean diet work for weight loss?, and how the pattern compares with a very low-carb approach is in Mediterranean diet vs keto.
Risks and who should be careful
- Salt. Olives, feta, cured fish and bread add up. Ten green olives already have about a fifth of the 2 g of sodium a day that EFSA set as a safe and adequate intake for adults. Lemon, garlic and herbs help you use less salt.
- Energy from fat. Adding olive oil and nuts on top of an unchanged diet adds energy. The trials replaced other fats; they did not just add more.
- Alcohol. Some research scores include moderate wine, but no one should start drinking for health. If you do not drink, do not start.
- Allergies. Nuts, sesame (tahini), fish and shellfish are common in this pattern and are among the major food allergens. Leave out what you react to; the pattern still works.
- Medical conditions. If you have heart disease, diabetes, kidney disease with a potassium or protein limit, or you take blood thinners such as warfarin (where steady vitamin K intake matters), talk to your doctor or dietitian before you change your diet.
How to start
Start with two habits: use extra virgin olive oil as your everyday fat instead of butter, and eat beans, chickpeas or lentils three times this week. Then add fish twice a week, one of them oily, such as sardines, mackerel or salmon.
Our 7-day Mediterranean meal plan turns this into a full week weighed in grams, the Mediterranean diet shopping list covers what to buy in a European supermarket, and A Mediterranean week on a budget shows what such a week costs in euros.
Recipes for the Mediterranean diet
Full recipes on Nutriveda, with ingredients in grams and nutrition per serving:
- Classic hummus
- Red lentil soup with lemon
- Fasolada: Greek white bean soup
- Chickpea and spinach stew
- Pasta e ceci
- Roasted Mediterranean vegetables, autumn version
- Roasted cauliflower and broccoli with tahini sauce
- Winter fruit salad with oranges, kiwi, grapes and pistachios
- Baked salmon with root vegetables
- Roasted root vegetables with thyme and honey
- Greek yogurt and pomegranate parfait
- Warm lentil salad with roasted carrots and feta
- Kale, apple and walnut salad
- Bob chorba: Bulgarian white bean soup
- Beetroot and walnut salad with garlic yogurt
- Stuffed peppers with bulgur and feta
- Pumpkin soup with ginger and turmeric
- Roasted pumpkin with chickpeas, tahini and pomegranate
- Pomegranate, walnut and parsley salad
- Autumn minestrone with pumpkin and cabbage
- Leek and potato soup
- Mediterranean mackerel stew with tomatoes and olives
- Bulgur pilaf with mushrooms and walnuts
- Baked figs with Greek yogurt and honey
- Baked apples with walnuts and cinnamon
Related entries
- Mediterranean diet for beginners: foods, plate and a starter week
- Mediterranean diet: benefits and risks, what the research says
- 7-day Mediterranean meal plan (1,800-2,000 kcal, in grams)
- Mediterranean diet shopping list for European supermarkets
- A Mediterranean week on a budget, costed in euros
- Does the Mediterranean diet work for weight loss?
- Mediterranean diet vs keto: which one fits you?
- Mediterranean diet for fatty liver
- Extra virgin olive oil
- Olives
- Lentils
- Chickpeas
- Tomatoes
FAQ
What is the Mediterranean diet?
It is the traditional way of eating around the Mediterranean Sea: mostly vegetables, fruit, legumes, whole grains and nuts, extra virgin olive oil as the main fat, fish a few times a week, moderate dairy, and red meat and sweets only occasionally.
Who invented the Mediterranean diet?
Nobody invented it; it is a traditional food culture. Scientific interest grew from the Seven Countries Study led by Ancel Keys, whose surveys began in 1958 and compared diet and heart disease in seven countries, including Italy, Greece and the former Yugoslavia.
Is the Mediterranean diet proven to work?
For heart health, yes, as far as nutrition research goes: randomised trials such as PREDIMED, the Lyon Diet Heart Study and CORDIOPREV found fewer cardiovascular events with a Mediterranean diet than with the control diets. For other conditions the evidence is mostly observational and less certain.
What is the Mediterranean diet score?
A research tool that gives one point for each of nine habits, such as more vegetables, legumes and fish, less meat and dairy, and more monounsaturated than saturated fat. In the Greek EPIC study, each 2-point rise was associated with about 25% lower risk of death from any cause.
Is the Mediterranean diet high in fat?
It can be moderate to high in fat, mostly from olive oil, nuts and olives, which are rich in monounsaturated fat. What matters is the swap: in the trials, olive oil replaced other fats rather than being added on top.
Can you follow the Mediterranean diet without alcohol?
Yes. Wine is part of some research scores, but the pattern works without it, and people who do not drink should not start for health reasons.
Sources
- Seven Countries Study: history of the study. sevencountriesstudy.com
- UNESCO Representative List of the Intangible Cultural Heritage of Humanity: Mediterranean diet (2010, 2013). mediterraneandietunesco.org
- Trichopoulou A, et al. Adherence to a Mediterranean diet and survival in a Greek population. N Engl J Med. 2003;348:2599-2608. Summary: aafp.org
- Estruch R, et al. Primary prevention of cardiovascular disease with a Mediterranean diet supplemented with extra-virgin olive oil or nuts. N Engl J Med. 2018 (republished). DOI 10.1056/NEJMoa1800389. doi.org
- Harvard T.H. Chan School of Public Health, The Nutrition Source. PREDIMED study retraction and republication (2018). nutritionsource.hsph.harvard.edu
- de Lorgeril M, Salen P, Martin JL, Monjaud I, Delaye J, Mamelle N. Mediterranean diet, traditional risk factors, and the rate of cardiovascular complications after myocardial infarction: final report of the Lyon Diet Heart Study. Circulation. 1999;99(6):779-785. PMID 9989963. MEDLINE citation
- Delgado-Lista J, et al. Long-term secondary prevention of cardiovascular disease with a Mediterranean diet and a low-fat diet (CORDIOPREV): a randomised controlled trial. Lancet. 2022. Summary: acc.org
- USDA FoodData Central, SR Legacy: FDC 171413 (olive oil), 170567 (almonds), 170581 (hazelnuts), 169096 (green olives), 173430 (butter, without salt). fdc.nal.usda.gov
- EFSA NDA Panel (2019). Dietary reference values for sodium. EFSA Journal 17(9):5778. efsa.europa.eu
This page is for information only and is not medical or dietary advice.
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