Chitosan Fat Blocker - Does chitosan fat blocker work for weight loss?

Chitosan is a dietary supplement promoted as a fat blocker. Chitosan is made from chitin, found in the skeleton of shrimp, crab, and other shellfish. Chitosan cannot be digested; therefore it passes through the intestinal tract unabsorbed without adding any calories. The chemical nature of chitosan makes it bind with fatty foods, removing some of the fat from the intestinal tract rather than allowing it to be absorbed. The results of studies with chitosan fat blokcer have been mixed. Some studies showed chitosan dietary supplement to be helpful, while others did not.
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Source Naturals - Diet Chitosan, 500 mg, 240 Caps

Chitosan, a fiber derived from chitin in shell-fish, is a nondigestible aminopolysaccharide. Chitosan is synthesized by removing acetyl groups from chitin, through a process called deacetylation. This process enhances the activity of chitosan by improving its solubility in the acidic environment of the stomach.

Chitosan Supplement Facts:
Chitosan (minimum 90% deacetylated chitin) 1 g +

Suggested Use: Two chitosan capsules before lunch and two capsules before dinner.
* Chitosan daily value not established
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Chitosan fat blocker for weight loss
Evaluating efficacy of a chitosan product using a double-blinded, placebo-controlled protocol.
J Am Coll Nutr. 2006 Oct;25(5):389-94. Kaats GR, Michalek JE, Preuss HG. Health and Medical Research Center, 4940 Broadway, Suite 201, San Antonio, TX 78209, USA.
These researchers at Health and Medical Research Center in San Antonio, Texas, looked into the effectiveness of a chitosan fat blocker dietary supplement on body composition. In a randomized, double-blinded, placebo-controlled dietary intervention protocol, subjects were assigned to a chitosan fat blocker treatment group, a placebo group (P) and a control group (C). The chitosan fat blocker treatment group took six 500 mg chitosan capsules per day and both chitosan fat blocker treatment group and P groups wore pedometers during their waking hours and recorded daily step totals. The C group followed weight loss programs of their choice, and took the same baseline and ending tests. Compared to C, the chitosan fat blocker treatment group lost more weight (-2.8 lbs vs. +0.8 lbs) and fat mass (-2.6 lbs vs. +0.1 lbs). Compared to P, the chitosan fat blocker treatment group lost more weight (-2.8 lbs. vs. -0.6 lbs), % fat (-0.8% vs. +0.4%, fat mass and had a greater body composition improvement index. These data provide evidence for the efficacy of a chitosan fat blocker compound to facilitate the depletion of excess body fat under free-living conditions with minimal loss of fat-free or lean body mass.

Additional link of interest
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