It can replace staple food. Yams are rich in carbohydrates, dietary fiber, and multiple vitamins, including vitamin b1 and vitamin b2. It can play a nourishing role. You can eat yams appropriately during the weight loss period. Yams can also have the effect of strengthening the stomach. Eating yams makes you feel full. It contains a lot of dietary fiber, which can speed up intestinal peristalsis.