A product containing a health claim for fiber and coronary heart disease must also meet the definitions of a low fat, low in saturated fat and low in cholesterol product. Although fiber is important, it is just one part of a properly balanced diet. It is possible that too much fiber may reduce the amount of calcium, iron, zinc, copper and magnesium that is absorbed from foods. Deficiencies of these nutrients could result if the amount of fiber in the diet is excessive, especially in young children. Fiber supplements are sold in a variety of forms from bran tablets to purified cellulose.
Many laxatives sold as stool softeners actually are fiber supplements.
Fiber's role in the diet is still being investigated. It appears that the various types of fiber have different roles in the body. For these reasons, avoid fiber supplements. Instead, eat a variety of fiber-rich foods. This is the best way to receive the maximum benefits from each type of fiber present in foods, and obtain necessary nutrients.