12 September 2008

There is a suggestion that chitin and chitosan promote effortless weight-loss. Many people call Chitosan as a fat absorber, fat trapper, fat buster and fat magnet. But, until now, there are no studies or evidence exist to support the claims. Consuming chitosan has already in large quantities in order to lose weight although there are no scientific.

Chitosan is made from chitin, which forms the shells of crabs, shrimp, lobsters, etc. The most common warning about the possible dangers of chitosan is that the composition of the chitin can vary depending on the seawater, and the animal it is extracted from. Shrimp from different regions can absorb, through the natural chelation process, different impurities from the surrounding water. Chelation is the same process in which chitin captures fat in the intestine and sweeps it through the body before it is absorbed. However, if chitosan binds and excretes fat that's consumed, then it will prevent the absorption of important fat-soluble vitamins (A, D, E, and K) and some valuable phytochemicals, which help to prevent disease. Another important point to consider is that some medications are fat-soluble and their effectiveness may be compromised. Women need to know this because oral contraceptives and estrogen fall into this category.

There is really no pure form. Chitosan-based products are always combined with lots and lots of other things, and those other things are very hard to remove. Chitosan may also be a threat to those who have seafood allergies. It's no wonder that many critics warn that consumers with seafood allergies should avoid chitosan, as it is derived from crustacean shells.

And, as was said earlier, scientific evidence just doesn't support their use. In fact, it was found that some of the studies conducted on chitosan were uncontrolled and involved only anecdotal evidence. There were no high-quality randomized double-blind placebo-controlled trials to support the efficacy of the product. Much worse is that those chitosan studies failed to comply with the minimum accepted scientific standards.

These substances aren't regulated by the U.S. Food and Drug Administration (FDA), so purity and safety aren't guaranteed. Even if you were to lose weight on either of these supplements, it would surely return if you revert back to unhealthy habits.. Save your money for some healthy food and perhaps a new pair of sneakers for exercise!

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