Chitosan for Weight ControlSkip to the navigation
Why Do Dieters Use It?*
Some dieters say that chitosan helps decrease appetite.
What Do the Advocates Say?*
Chitosan has been shown to inhibit fat absorption in animals, although in studies in humans chitosan did not inhibit fat absorption. Some research has found that taking chitosan during a weight loss program increases the amount of weight loss. In other studies, however, chitosan was ineffective.
It is important to note that supplementing with chitosan will also cause the body to excrete the important fat-soluble vitamins A, D, E, and K, too.
Dosage & Side Effects
How Much Is Usually Taken by Dieters?
A double-blind Polish study found that people taking 1,500 mg of chitosan three times daily during a weight loss program lost significantly more weight than people taking a placebo with the same program.1 Other studies using smaller amounts of chitosan have reported no effects on weight loss.2 , 3 , 4
Adverse effects on the growth of children and on the outcome of pregnancy are possible.5 In addition, although chitosan-included alterations in intestinal flora are believed to be beneficial, the possibility that these changes may have negative long-term consequences has not been ruled out. People with intestinal malabsorption syndromes should not use chitosan.
Interactions with Supplements, Foods, & Other Compounds
While no long-term studies of the effects of chitosan on human health have been done, animal studies suggest that this compound could inhibit the absorption of minerals and fat-soluble vitamins.
Interactions with Medicines
Where to Find It
Chitosan is extracted from the shells of crustaceans, such as shrimp and crab.
Last Review: 01-23-2015
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The information presented in Aisle7 is for informational purposes only. It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage as cited in each article. The results reported may not necessarily occur in all individuals. For many of the conditions discussed, treatment with prescription or over the counter medication is also available. Consult your doctor, practitioner, and/or pharmacist for any health problem and before using any supplements or before making any changes in prescribed medications. Information expires June 2016.