Chitosan stands out for its ability to trap fat before it is absorbed in the body. Chitosan is a naturally occurring fiber derived from the complex sugar (polysaccharide) found in the hells (exoskeletons) of shrimp, crabs and other shellfish. Chitosan has the capacity to bind lipids and fats. More importantly, since it is not digested, chitosan has no calories. Published reports have shown that chitosan works in concert with vitamin C. This dietary fiber is an indispensable adjunct to a balanced weight management program. Fibers also play an important role in cleansing the gastrointestinal tract, which stimulates he digestive processes and promotes intestinal health.