Whether or not persimmons are harmful when eaten astringently is related to the amount of persimmons consumed, whether or not they are eaten on an empty stomach, and the individual’s constitution. If a small amount is ingested, it is of little concern; if a large amount is ingested, it may be detrimental to your health. Persimmons are astringent because they are not yet fully ripe. Eating a small amount of astringent persimmons will not affect your health. Eating large quantities may be detrimental to health. Astringent persimmons contain a lot of tannic acid, tannic acid on the gastrointestinal mucosa will cause some irritation, causing gastrointestinal discomfort, tannic acid will also be combined with proteins in the stomach, the formation of tannins, deposited in the stomach to cause gastric stones, eat a large number of the body will cause harm. Astringent persimmons will affect the taste of people, try not to eat astringent persimmons, it is best to put ripe and then eat, and can not eat persimmons on an empty stomach, patients with high blood sugar should also eat less. It is recommended to go to the hospital in time if you have any discomfort after taking it.