| Dietary supplements for improving body composition and reducing body weight: where is the evidence? | |
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MedLine Citation:
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PMID: 22465867 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Weight-loss supplements typically fall into 1 of 4 categories depending on their hypothesized mechanism of action: products that block the absorption of fat or carbohydrate, stimulants that increase thermogenesis, products that change metabolism and improve body composition, and products that suppress appetite or give a sense of fullness. Each category is reviewed, and an overview of the current science related to their effectiveness is presented. While some weight-loss supplements produce modest effects (<2 kg weight loss), many have either no or few randomized clinical trials examining their effectiveness. A number of factors confound research results associated with the efficacy of weight-loss supplements, such as small sample sizes, short intervention periods, little or no follow-up, and whether the supplement is given in combination with an energy-restricted diet or increased exercise expenditure. There is no strong research evidence indicating that a specific supplement will produce significant weight loss (>2 kg), especially in the long term. Some foods or supplements such as green tea, fiber, and calcium supplements or dairy products may complement a healthy lifestyle to produce small weight losses or prevent weight gain over time. Weight-loss supplements containing metabolic stimulants (e.g., caffeine, ephedra, synephrine) are most likely to produce adverse side effects and should be avoided. |
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Authors:
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Melinda M Manore |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: International journal of sport nutrition and exercise metabolism Volume: 22 ISSN: 1543-2742 ISO Abbreviation: Int J Sport Nutr Exerc Metab Publication Date: 2012 Apr |
Date Detail:
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Created Date: 2012-04-02 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100939812 Medline TA: Int J Sport Nutr Exerc Metab Country: United States |
Other Details:
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Languages: eng Pagination: 139-54 Citation Subset: IM |
Affiliation:
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Dept. of Nutrition and Exercise Sciences, Oregon State University, Corvallis, OR. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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