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Diet - fiber; Roughage; Bulk
Eating a large amount of fiber in a short period of time can cause intestinal gas (flatulence), bloating, and abdominal cramps. This usually goes away once the natural bacteria in the digestive system get used to the increase in fiber in the diet. Adding fiber gradually to the diet, instead of all at one time, can help reduce gas or diarrhea.
Too much fiber may interfere with the absorption of minerals such as iron, zinc, magnesium, and calcium. However, this effect usually does not cause too much concern because high-fiber foods are typically rich in minerals.
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Howarth NC, Huang TT, Roberts SB, McCrory MA. Dietary Fiber and Fat Are Associated with Excess Weight in Young and Middle-Aged US Adults. J Am Diet Assoc. 2005;105(9):1365-72.
Seki T, Nagase R, Torimitsu M, et al. Insoluble fiber is a major constituent responsible for lowering the post-prandial blood glucose concentration in the pre-germinated brown rice. Biol PharmBull. 2005 Aug;28(8):1539-41.
Burleson K. Coronary Artery Disease. In: Rakel D, ed. Rakel: Integrative Medicine. 2nd ed. Philadelphia, Pa: WB Saunders; 2007:chap 28.
Park D, Ring M. Peripheral Vascular Disease. In: Rakel D, ed. Rakel: Integrative Medicine. 2nd ed. Philadelphia, Pa: WB Saunders; 2007:chap 29.
Underbakke G, McBride P. Dyslipidemias. In: Rakel D, ed. Rakel: Integrative Medicine. 2nd ed. Philadelphia, Pa: WB Saunders; 2007:chap 40.
Hanaway P. Irritable Bowel Syndrome. In: Rakel D, ed. Rakel: Integrative Medicine. 2nd ed. Philadelphia, Pa: WB Saunders; 2007:chap 41.
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