1, strengthening the spleen and stomach, helping digestion: Yam contains amylase, polyphenol oxidase and other substances, which is beneficial to the digestion and absorption function of the spleen and stomach. It is a dual-purpose product for nourishing the spleen and stomach. Both spleen yang deficiency and stomach yin deficiency can be eaten. Clinically, it is often used to treat spleen and stomach weakness, anorexia, fatigue, diarrhea and other diseases; 2, kidney and essence: yam contains a variety of nutrients, which has the function of strengthening the body and tonifying the kidney and essence. Generally, it is kidney deficiency, nocturnal emission, frequent urination and other symptoms. Can be taken; 3, benefiting the lungs and relieving cough: yam contains saponin and mucus, which has the effect of lubricating and moistening dryness, so it can benefit the lungs, nourish the lungs and treat the symptoms of lung deficiency and chronic cough; 4, lowering blood sugar: Yam contains mucin, which has the effect of lowering blood sugar, can be used to treat diabetes, and is a good diet for diabetics; 5, prolong life: yam contains a lot of mucin, vitamins and trace elements, which can effectively prevent blood lipids from depositing on the blood vessel wall, prevent heart disease, and achieve the effects of benefiting the heart and calming the nerves and prolonging life; 6. Anti-hepatic coma In recent years, studies have found that yam has a sedative effect and can be used to resist hepatic coma. ≮ Nutritional value ≯ Yam contains only about half the calories and carbohydrates of sweet potato, and contains no fat. Protein content is higher than sweet potato. The main component of yam is starch, some of which can be converted into dextrin, a decomposition product of starch, which can help digestion, so yam is a taro food that can be eaten raw. Yam contains many trace elements, especially potassium. There are few kinds and quantities of vitamins, including vitamin B 12, vitamin K, vitamin P and vitamin D, and almost no carotene. The leaves of Chinese yam are excellent sources of carotene, calcium, iron and vitamin C. Yam contains starch glucoamylase, amylase and other digestive enzymes. In particular, it contains starch glucoamylase, which can decompose starch three times as much as radish. Eating it when you have abdominal distension can promote digestion and eliminate discomfort. The material basis of yam with strong viscosity is the compound of sugar and protein, a substance called mucin, which can prevent mucosal damage, protect stomach wall and prevent gastric ulcer and gastritis under the action of pepsin. Yam contains saponin, choline and other ingredients. Saponins can reduce cholesterol and triglycerides and improve diseases such as hypertension and hyperlipidemia. Choline is the material basis of acetylcholine, which is a neurotransmitter related to learning and memory. ≮ Influence on Disease and Health ≯ Yam contains mucin, amylase, saponin, free amino acids, polyphenol oxidase and other substances, which are rich in content and have nourishing effects, and are good products for rehabilitation and food supplement after illness. Yam contains no fat, and mucin can prevent fat deposition in cardiovascular system and prevent premature arteriosclerosis. Yam can increase human T lymphocytes, enhance immune function, delay cell aging and prolong life. Mucopolysaccharides in yam can combine with inorganic salts to form bones, making cartilage elastic. Yam has the function of losing weight and keeping fit.