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How much fiber should someone take?

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Fiber that comes from whole foods is called dietary fiber. Fiber that's sold in supplements, or added to fortified foods, is called functional fiber. The Institute of Medicine has set an adequate intake (AI) for total fiber, which includes all sources. Getting this amount of fiber should be enough to stay healthy. Doctors may recommend higher doses of fiber.

Even in high amounts, fiber appears to be safe. Experts have not discovered an amount of fiber that's harmful.

From: Fiber WebMD Medical Reference

SOURCES: American Dietetic Association web site: "Possible Side-effects of High Fiber Diets," "Nutrition Fact Sheet: Fiber." American Heart Association web site: "Fiber: AHA Recommendation." Harvard School of Public Health web site: "Fiber." Institute of Medicine web site: "Dietary Reference Intakes: Macronutrients." Linus Pauling Institute Micronutrient Information Center web site: "Fiber." Longe, J., ed. , second edition, 2004. University of California San Francisco Medical center: "Fiber."






The Gale Encyclopedia of Alternative Medicine

Reviewed by Melinda Ratini on June 1, 2018

SOURCES: American Dietetic Association web site: "Possible Side-effects of High Fiber Diets," "Nutrition Fact Sheet: Fiber." American Heart Association web site: "Fiber: AHA Recommendation." Harvard School of Public Health web site: "Fiber." Institute of Medicine web site: "Dietary Reference Intakes: Macronutrients." Linus Pauling Institute Micronutrient Information Center web site: "Fiber." Longe, J., ed. , second edition, 2004. University of California San Francisco Medical center: "Fiber."






The Gale Encyclopedia of Alternative Medicine

Reviewed by Melinda Ratini on June 1, 2018

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What are some foods that contain soluble fiber?

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