Persimmons in Baidu Encyclopedia have high nutritional value and are rich in sucrose, glucose, fructose, protein, carotene, vitamin C, citrulline, iodine, calcium, phosphorus and iron. The content of vitamins and sugar is about 2 times higher than that of common fruits1~. If a person eats a persimmon a day, the intake of vitamin C can meet half of the daily demand on the basic persimmon. Immature fruit contains tannins. Persimmon contains a lot of carbohydrates, and every100g of persimmon contains10.8g, mainly sucrose, glucose and fructose, which is why everyone thinks persimmon is very sweet. Fresh persimmons have high iodine content, which can prevent endemic goiter. In addition, persimmon is rich in pectin, which is a kind of water-soluble dietary fiber. It has a good laxative effect and has a good effect on correcting constipation and maintaining the normal growth of intestinal flora. Although eating persimmons has many benefits, there are several points to be reminded: persimmons should not be eaten on an empty stomach, because persimmons contain more tannic acid and pectin. On an empty stomach, they will form hard persimmon blocks of different sizes under the action of gastric acid. If these lumps cannot reach the small intestine through pylorus, they will stay in the stomach and form gastric persimmon stones. The persimmon stone with a small belly looks like almonds at first, but it will accumulate more and more. If the stomach persimmon stone cannot be discharged naturally, it will cause digestive tract obstruction, severe pain in the upper abdomen, vomiting and even hematemesis. A fist-sized stomach persimmon stone was found during the operation. If the stomach has a "bottom", the formation of stomach persimmon stone can be avoided. Persimmon skin can't be eaten. Some people think that chewing persimmon skin while eating persimmon is more delicious than eating persimmon alone. In fact, this way of eating is unscientific. Because most of the tannic acid in persimmon is concentrated in the skin, it is impossible to remove all the tannic acid when persimmon is astringent. If the skin is eaten together, it is easier to form stomach persimmon stone, especially when the astringency removal process is not perfect, and its skin contains more tannic acid. Don't eat with high-protein crab, fish, shrimp and other foods. In traditional Chinese medicine, crabs and persimmons are cold foods and cannot be eaten together. From the point of view of modern medicine, high-protein crabs, fish and shrimps are easy to solidify into blocks under the action of tannic acid, that is, stomach persimmon stone. Diabetics should not eat persimmons, because persimmons contain 10.8% of sugar, and most of them are simple disaccharides and monosaccharides (such as sucrose, fructose and glucose), which are easily absorbed after eating, and make blood sugar rise. It is more harmful to people with diabetes, especially those with poor blood sugar control.