The biggest feature of yam is that it can supply a lot of mucin to human body. This is a kind of polysaccharide protein, which has special health care effect on human body. It can prevent systemic fat deposition, maintain vascular elasticity, prevent premature atherosclerosis, reduce subcutaneous fat deposition and avoid obesity. Therefore, yam is an ideal Chinese medicine for losing weight and keeping fit. From the world of Chinese herbal medicine. com