Numerous studies and reports revealed that one of the major problem faced by people of entire world is obesity. However, still there is a hope for people suffering from obesity in the form of chitosan. Moreover, a wide range of natural alternatives for weight controlling and maintaining are under process of development. The fact is, most of the studies on chitosan were conducted on mice, canines, guinea pigs, and broiler chickens. There is actually a lack of studies on chitosan conducted on humans. It is most unfortunate that only one well-designed study on chitosan, involving humans as subject, has been published. That study was conducted in 1999 by the European Journal of Clinical Nutrition, showing that chitosan supplements were no better than a placebo in reducing body weight. In addition, chitosan weight loss products declare to have an effect on that fat before it reaches the stomach. As a result, the fat reduces the possibility to be metabolized. Moreover, it is distinguished that the chitosan disallows the incorporation as well as storage of fat by substituting it into a gel which pins down or chokes up the fat. Possible Side Effects of Chitosan According to some clinical studies, chitosan is great for weight loss as it binds fat to molecules in the digestive tract, preventing the body from absorbing the fat. It also lowers the cholesterol in the blood, treat anemia, and improve the person's strength, the immune system, as well as the appetite and sleep. The fungal cell walls also fall in the particular category. Dissimilar to the majority plant fibers, chitosan is famous for possessing positively charged amino groups. These groups create ionic bonds with lipids as well as bile elements. The system of how chitosan affecting blood lipids look forward to exposition. It is claimed by makers of Natrol Chitosan that it is one the most excellent supplement for extra weight loss. This product is actually developed by Natrol, Inc. and so is the name given to it. Natrol, Inc. based in Southern California is one of the well known companies producing nutritional supplements including Natrol Chitosan.