The types of calories consumed may influence how likely you are to keep that weight off for the long term, according to a Harvard study.

Medical School professor and VITAL lead researcher JoAnn Manson details results from a large probe of vitamin D and omega-3 as possible disease fighters.

Nutrition researchers with widely varying views on dietary guidelines for fats and carbohydrates offered a model for transcending the diet wars, with both sides agreeing on overall diet quality.