First, it is nutritious. According to chemical analysis, each kilogram of sweet potato contains 256 grams of sugar, protein 15 grams, calcium 156 mg, phosphorus 174 mg, and various vitamins, especially carotene, which is the best among cereals and vegetables.
Second, because it contains a mucin with special functions. This mucin not only can maintain the elasticity of human cardiovascular wall, prevent arteriosclerosis, reduce subcutaneous fat, prevent connective tissue atrophy of liver and kidney, and prevent collagenosis, but also has a good lubricating effect on respiratory tract, digestive tract, joint cavity and serous cavity.
Third, sweet potato is rich in dietary fiber, gum and other defecation substances, which can be described as "intestinal scavenger".
Fourthly, it is a physiological alkaline food, which can neutralize the acidic substances produced by meat, eggs, rice and flour, adjust the acid-base balance of human body, and has positive significance for maintaining human health.
Although sweet potato is a cheap and delicious fitness longevity food, it contains oxidase and crude fiber, which will produce a lot of carbon dioxide gas in human stomach. Because of its high sugar content, eating too much will produce gastric acid, causing abdominal distension, heartburn and other symptoms. So eating sweet potatoes should pay attention to science. Don't eat too much at a time, try to use fine processing, preferably with rice and noodles, to reduce the production of stomach acid and prevent symptoms such as bloating and heartburn.