Trans Fats

New studies add to these fats' image problem

Supermarkets are stocked with enough varieties of butter, margarine, and spreads to give a shopper pause. It’s no small task to decipher which sticks and tubs contain which types of fat—and which fats are best for your health.

Some specialty-food labels promote an absence of trans fats. The Food and Drug Administration is considering requiring facts about trans-fat content on most food packaging.