1. protein in nutritious potatoes is better than soybean, and it is closest to animal protein. Potatoes are also rich in lysine and tryptophan, which are incomparable to ordinary grains. Potatoes are also foods rich in potassium, zinc and iron. The potassium contained in it can prevent cerebral vascular rupture. The content of protein and vitamin C in it is 10 times that of apple, and the content of vitamin B 1, B2, iron and phosphorus is also much higher than that of apple. From a nutritional point of view, its nutritional value is equivalent to 3.5 times that of apples. 2. Compared with rice, potatoes that are beneficial to weight loss produce lower calories and only contain 0. 1% fat. If you take it as a staple food and insist on eating only potatoes every day, it will be very effective for losing excess fat. Third, prevent stroke. Eating an average of five to six potatoes a week can reduce the risk of stroke by 40% without any side effects. Fourth, nourishing the stomach and strengthening the spleen potatoes have the effects of harmonizing the stomach, regulating the middle, strengthening the spleen and benefiting qi, and also have therapeutic effects on gastric ulcer, habitual constipation, hot cough and skin eczema.