Mediterranean diets are rich in healthy unsaturated fats from olive oil or nuts (such as walnuts, hazelnuts and almonds), have been found to have a better benefit than low-fat diets' for improving cholesterol, blood pressure and blood sugar levels. It has been found that olive oil and nut have mostly monounsaturated fat, antioxidants,and other nutrients that may have health benefits of reducing inflammation in the blood vessels and heart-protection.
A recent study of 769 patients suffered from type 2 diabetes has shown a small improvement in HDL in those on Mediterranean diet while a decline of HDL with low-fat diets. Furthermore, Mediterranean diet also help lower the high blood pressure, sugar levels. and C-reactive protein (a marker of chronic inflammation).
SOURCE: Annals of Internal Medicine, July 4, 2006.