Yam is rich in carbohydrate and dietary fiber. Traditional Chinese medicine believes that yam is sweet and non-toxic. It has the effects of tonifying the spleen and kidney, nourishing the lung, stopping diarrhea, and astringing sweat. It is a good "food medicine". Different people can get different effects when eating yam. For some people, eating yams can prevent and cure certain diseases. Here's a look at who is most suitable for eating yams.