Yam powder is a well-known tonic. It contains proteins, sugars, vitamins, fats, choline, amylase and other ingredients. It also contains iodine, calcium, iron, phosphorus and other indispensable inorganic salts and trace elements. It contains enough fiber and will be produced after consumption A sense of fullness, thereby controlling the desire to eat. Secondly, yam itself is a high-nutrition, low-calorie food, you can safely eat more without worrying about getting fat.