"The key components of Mediterranean diets are also beneficial for weight loss in obese patients  and for preventing long-term weight gain in non-obese populations ."
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Weight loss with a low-carbohydrate, Mediterranean, or low-fat diet.Shai I1,
"Mediterranean and low-carbohydrate diets may be effective alternatives to low-fat diets. The more favorable effects on lipids (with the low-carbohydrate diet) and on glycemic control (with the Mediterranean diet) suggest that personal preferences and metabolic considerations might inform individualized tailoring of dietary interventions."
N Engl J Med. 2011 Jun 23;364(25):2392-404. doi: 10.1056/NEJMoa1014296.Mozaffarian D1,