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Updated: Jul 19, 2026

Measurement of Chitinase Activity in Biological Samples
Published on: August 22, 2019
Evaluating efficacy of a chitosan product using a double-blinded, placebo-controlled protocol
Gilbert R Kaats1, Joel E Michalek, Harry G Preuss
1Health and Medical Research Center, 4940 Broadway, Suite 201, San Antonio, TX 78209, USA. gil@hmrcenter.net
Chitosan supplementation effectively reduced body fat and weight in overweight adults. This dietary intervention showed significant fat mass reduction with minimal loss of lean body mass.
Area of Science:
- Nutrition Science
- Human Physiology
- Dietary Supplements
Background:
- Overweight and obesity are significant public health concerns.
- Effective and safe interventions are needed to manage body composition.
- Dietary supplements are explored for their potential role in weight management.
Purpose of the Study:
- To evaluate the efficacy and safety of a chitosan dietary supplement.
- To assess its impact on body composition under free-living conditions.
Main Methods:
- Randomized, double-blinded, placebo-controlled trial.
- 150 overweight adults were assigned to chitosan (TRT), placebo (PLA), or control (CTL) groups.
- Body composition was assessed using Dual Energy X-ray Absorptiometry (DXA).
Main Results:
- The chitosan group lost significantly more weight and fat mass compared to both control and placebo groups.
- Significant reductions in body weight, fat mass, and percentage of body fat were observed in the TRT group.
- The chitosan intervention demonstrated a positive body composition improvement index (BCI).
Conclusions:
- Chitosan supplementation is effective in reducing excess body fat.
- The supplement facilitates fat depletion while preserving fat-free and lean body mass.
- Chitosan shows promise as a dietary aid for improving body composition.
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