Taro as a common food, there is a certain amount of nutrition, but talk about efficacy. Taro’s main ingredient is starch, starch belongs to carbohydrates, it is important to maintain blood sugar, for the body’s metabolism to provide energy. Taro glycemic index GI of about 48, than corn, sweet potatoes, potatoes, glycemic index are lower, belong to the low glycemic index of food. Taro can be used as an ideal staple food for diabetic patients, replacing some of the refined carbohydrates such as noodles and rice. Taro in the protein content is not high, containing the human body needs seven of the eight essential amino acids, but the structure is not reasonable, the human body absorption rate is not high. In addition, taro has a certain amount of mucopolysaccharide. Mucopolysaccharides in the intestine can slow down the rate of cholesterol absorption, and at the same time can neutralize part of the oxygen free radicals. In summary, taro has a certain nutrition, but can not exaggerate its effectiveness.