Eating a Mediterranean diet for at least 3 months may be your passport to improved heart health, according to a study in the November issue of The American Journal of Clinical Nutrition. The researchers studied more than 200 men and women at moderate risk for CHD, who for 90 days ate either a Mediterranean-based diet or a low-fat diet. The results were, well, heartening: Those who adhered to the Mediterranean diet had a 15% reduction in CHD risk, compared to only a 9% reduction in those who stuck to the low-fat diet. Total-cholesterol and triglyceride levels were also significantly lower in the participants who adhered to the Mediterranean diet. The hallmarks of this diet are lots of whole grains, fruits, vegetables, nuts, fish and olive oil.