Chitosan is produced by the deacetylation of chitin, which is the structural element in the exoskeleton of crustaceans such as crabs and shrimp.
Modern Usage
Chitosan's properties enable it to rapidly clot blood, and it has recently gained approval in the USA for use in bandages and other haemostatic agents. One brand of chitosan-containing bandages was able to quickly stop bleeding in tests conducted by the US Marines, resulting in a 100% survival rate from otherwise lethal arterial wounds.
Traditional Usage
Chitosan is made commercially from chitin, the structural element in the exoskeleton of crustaceans, and is used as a so-called fat magnet. It has the capability of attracting fat from the digestive system and expelling it from the body so that users can lose weight without eating less.

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