Mediterranean diet

Short definition from Wiktionary

Noun

1. 1
   Any variant of a diet (food intake) traditionally typical of that eaten by people in the Mediterranean region (with olive oil, legumes, unrefined cereals, fruits and vegetables, etc. and limited meat other than fish); thought to increase life expectancy and protect against heart disease and cancer.
2. 2
   Any variant of a diet (controlled regimen) based on that principle.