1, raw yam is not recommended. Raw yam mucus contains saponin and plant alkaloids. If these ingredients are directly contacted by the human body, it will cause itching of the skin. Therefore, in daily life, it is recommended to cook before eating.
2, and yam is rich in starch, raw starch granules are not broken, and it is difficult for the human body to digest. After cooked, yam can strengthen the spleen and kidney, and can also regulate nerves, circulation, digestion and endocrine.