2. Dried yam contains protein, sugar, vitamins, fat, choline, amylase and other ingredients. It also contains iodine, calcium, iron, phosphorus and other indispensable inorganic salts and trace elements. It contains enough fiber, which will make you feel full after eating, thus controlling your appetite. Secondly, yam itself is a kind of food with high nutrition and low calorie, so you can eat more without worrying about getting fat.