The dietary fiber of potatoes is delicate and soft, and does not hurt the stomach. It has good therapeutic effect on gastritis, gastric ulcer and duodenal ulcer. Rich in potassium has the function of regulating cardiovascular and cerebrovascular diseases, and dietary fiber can moisten the intestines and relieve constipation, which is of positive significance for preventing stroke. Potato skins, especially germinated potatoes, contain more solanine, which is toxic and should be peeled when eating. Potatoes contain a lot of sugar and are not suitable for diabetics. Don't eat potatoes with bananas, which will make your face grow spots.