Chitosan is a naturally occurring substance that resembles cellulose in its structure and is derived from a polysaccharide called chitin.

Like dietary fiber, chitosan is not digestible but may have beneficial effects on the gastrointestinal tract.  Chitosan acts as an effective fat. The soaked up fat molecules are then converted into a form that is not suitable for absorption. Chitosan may also effect aa lowering of blood cholesterol.

Chitosan is used an over-the-counter food supplement used for weight loss