Review confirms links between diet, heart health

Vegetables, nuts and the so-called "Mediterranean" diet are heart-friendly, while trans fats and foods with a high glycemic index can harm your heart, say researchers who reviewed 189 studies published between 1950 and 2007.

The Mediterranean died is typically loaded with fruits, vegetables, grains and olive oil.

The researchers also found modest evidence of a causal relationship between heart health and several other foods and vitamins, such as fish, omega-3 fatty acids from marine sources, folate, whole grains, alcohol, fruits, fiber, dietary vitamins E and C and beta carotene.