People Are Programmed To Love Chocolate, Study Finds

For the first time, scientists have linked preference for a food -- chocolate -- to a chemical signature that may be programmed in the metabolic system and is detectable by laboratory tests. The signature reads 'chocolate lovers' in some people and indifference to the popular sweet in others, the researchers say. The study could lead to a test that classifies people based on their metabolic type, which can be used to design healthier individual diets, they say.