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Add more fiber to your diet. Maybe you've heard that advice before. But do you know why dietary fiber is so good for your health?

Fiber is found mainly in plant foods such as fruits, vegetables, whole grains and members of the bean family called legumes. Fiber may be best known for its ability to prevent or relieve constipation. But foods with fiber can have other good effects as well. They can help you stay at a healthy weight and lower the risk of diabetes, heart disease and some types of cancer.

Choosing tasty foods that provide fiber isn't hard. Find out how much dietary fiber you need, which foods have it, and how to add them to meals and snacks.