Chitosan is a fat blocker which is used by many people to try to lose weight. Chitosan works by preventing the absorption of some of the fat in the diet. Chitosan goes through the digestive tract and absorbs four to six times its weight in fat. In doing this it flushes out of the body the fat before it can be metabolised and stored.
Chitosan is effective at addressing fat as it is consumed however there are significant side effects, for example, by blocking the absorption of fat, the drug also interferes with the absorption of vitamins A, D, E and K, as well as beta-carotene -- all of which are fat-soluble. In addition to this anal leakage is also a document side effect and the drugs can be expensive.
