There's a reason you're confused in the butter aisle. Years ago, butter was a no-no. Vegetable-oil-based margarines surged in popularity as doctors began to understand the dangers of saturated fat.
But the butter-versus-margarine debate is a slippery subject. Some margarines have unhealthy trans fats, while others have confusing health claims. Meanwhile, some say butter is an "all-natural" choice.
Well, we've got the bottom line on butter and its alternatives. Here are some of the best and worst products for your heart.