The efficacy of sweet potatoes is as follows: 1, rich in dietary fiber and vitamins, facilitate the stool, for intestinal dry constipation, bowel difficulties, if appropriate consumption of sweet potatoes have a very good effect of facilitating the stool, can also prevent intestinal tumors. 2, can reduce the incidence of overweight and obesity, because sweet potatoes after eating a significant sense of satiety, which can avoid the intake of other excessive food, in the prevention of overweight and obesity. Very obvious role in the occurrence of overweight and obesity. Sweet potato taboo is that if you eat too much will lead to heartburn, acid reflux, for the spleen and stomach cold people are not easy to eat too much, otherwise it will cause gastrointestinal discomfort.