1, spleen and stomach, digestive: yam contains amylase, polyphenol oxidase and other substances, is conducive to the spleen and stomach digestion and absorption function, is a flat complementary spleen and stomach of the medicinal food products. It can be consumed regardless of spleen yang deficiency or stomach yin deficiency. Clinically used to treat weakness of the spleen and stomach, eating less body tiredness, diarrhea and other diseases; 2, nourish the kidneys and benefit the essence: yam contains a variety of nutrients, has a strong body, nourish the kidneys and benefit the role of the essence. All kidney loss spermatorrhea, women's leukorrhea, urination, etc., can be served; 3, benefit lung cough: yam contains saponins, mucus, lubrication, moisturizing effect, so it can benefit the lung qi, nourish the lung yin, the treatment of lung deficiency, phlegm cough cough; 4, lower blood sugar: yam contains mucin, has the effect of lowering blood glucose, can be used for the treatment of diabetes, diabetic dietary supplements; 5, prolong life: yam contains A large number of mucus protein, vitamins and trace elements, can effectively prevent the precipitation of lipids in the blood vessel wall, to prevent heart and blood diseases, to obtain the benefits of peace of mind, prolonging the efficacy of life; 6, anti-hepatic coma In recent years, it was found that yam has a sedative effect, can be used to anti-hepatic coma. ≮ Nutritional value ≯ yam contains calories and carbohydrates only about half of the sweet potato, does not contain fat, protein content is higher than sweet potato. The main component of yam is starch, part of which can be converted to dextrin, a breakdown product of starch, dextrin can help digestion, so yam is a taro food that can be eaten raw. Yam contains a variety of trace elements, especially potassium content is high; contains a variety of vitamins and the number of small, does not contain vitamin B12, vitamin K, vitamin P, vitamin D, almost no carotene. The leaves of the yam are an excellent source of carotenoids and a good source of calcium, iron and vitamin C. The leaves of the yam contain starch saccharification, which is the most common form of starch saccharification. Yam contains a variety of digestive enzymes such as amylase and amylopectin. In particular, it contains amylase, which is able to break down starch, and is three times more abundant than radish. When eaten when the stomach is bloated, it promotes digestion and removes uncomfortable symptoms. The material basis for the strong viscosity of yam is a complex of sugar and protein - a substance called mucin, which prevents damage to the mucous membrane and protects the stomach lining under the action of pepsin, preventing gastric ulcers and gastritis. Yam contains saponins, choline and many other ingredients. Saponins are able to lower cholesterol and triglycerides and improve hypertension and hyperlipidemia. Choline is the material basis of acetylcholine, a neurotransmitter related to learning and memory. ≮ Effect on disease, health ≯ yam contains mucin, amylase, saponins, free amino acids, polyphenol oxidase and other substances, and the content is relatively rich, with nourishing effect, for the recovery of disease dietary supplements of the best products. Yam does not contain fat, and contains mucin can prevent fatty deposits in the cardiovascular system, to prevent premature hardening of the arteries. Yam can increase the human body T lymphocytes, enhance immune function, delay cellular aging, have the effect of prolonging life. The combination of mucus polysaccharide and inorganic salts in yam can form bone and make the cartilage have a certain degree of elasticity. Yam has the role of weight loss and bodybuilding.