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You may have heard of "functional foods" -- bread, margarine, yogurt, and even eggs that have nutrients added to help your heart.

You can get these nutrients from the foods that naturally contain them: vegetables, fruit, whole grains, fish, and healthy fats. But the typical American diet can sometimes fall short. So now they're added to some foods that don't normally have them.

Three that are added to many foods are plant stanols or sterols, fiber, and omega-3s. Here's a look at what they do for you.

Plant Stanols and Sterols

What are they? Plant stanols and sterols are found in fruits, vegetables, nuts, and seeds. Their structure is a lot like cholesterol. But they block cholesterol in your digestive system, so less cholesterol moves into your bloodstream to clog your arteries.

How much do you need? Getting 2 grams of either plant stanols or sterols daily can bring down bad cholesterol ( LDL) by 5% to 15% in a few weeks. If you already eat butter, margarine, or oil-based spreads, switching to one with extra plant stanols or sterols might be a good move, says Christine Gerbstadt, MD, RD, author of Doctor's Detox Diet. It's easy to overdo fats, though, so eat these margarines and oils in moderation.


What is it? Fiber is naturally in plant foods: fruits, vegetables, beans and other legumes, and whole grains . Food scientists have created powdered fiber with no real flavor. It's added where you'd never expect to find it: in hot dog buns, sugary cereals, even yogurt. On the label it may be called inulin, maltodextrin, polydextrose, or chicory fiber. It often comes from different sources than the dietary fiber in oats, whole wheat bread, or bran cereal.

How does fiber help the heart? It's well-known that fiber can bring down your cholesterol level. Eating enough fiber can also lower your chances of developing heart disease, type 2 diabetes, and obesity. The problem is that most people don't get enough.