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Fibre supplements
Fibre supplements (or fiber supplements) are considered to be a form of a subgroup of functional dietary fibre, and in the United States are defined by the Institute of Medicine (IOM). According to the IOM, functional fibre "consists of isolated, non-digestible carbohydrates that have beneficial physiological effects in humans".〔Institute of Medicine of the National Academies. (2005). "Dietary Reference Intakes for energy, carbohydrates, fiber, fat, fatty acids, cholesterol, protein and animo acids". Washington, DC: National Academies Press. Retrieved from http://books.nap.edu/openbook.php?record_id=10490&page=R1〕
Fibre supplements are widely available, and can be found in forms such as powders, tablets, and capsules. Consumption of fibre supplements may be for: improving dietary intake, lowering blood cholesterol, alleviating irritable bowel syndrome, reducing the risk of colon cancer, and increasing feelings of satiety.
Excessive fibre intake can lead to fluid imbalance, dehydration, mineral deficiencies, nutrient and drug interactions, and other medical problems.
== Rationale for fibre supplement use ==
The American Dietetic Association recommends that the average adult consume 25 to 38 grams of dietary fibre per day. However, research has shown that the average American only consumes 14 to 15 grams per day.〔 To reach the recommended amount of fibre, consumption of dietary fibre from foods (e.g. plants, vegetables, legumes, and grains) instead of supplements is preferred because they contain additional beneficial nutrients and non-nutritive components (e.g. antioxidants and phytoestrogens). Nevertheless, a fibre supplement may be needed to prevent constipation when food intake is low, which is the case among inactive elderly. A cereal bran such as psyllium seed husk, or a synthetic fiber such as methylcellulose is often used in this case.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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