Can cause constipation. Tannic acid in tea can also combine with protein in food to produce a large amount of tannic acid protein, which is difficult to digest and absorb, leading to constipation. For patients with habitual constipation, drinking strong tea will aggravate constipation.

Tea contains a lot of tannic acid, theophylline, caffeine and a small amount of aromatic oil, vitamins, chlorophyll and other ingredients. Moderate drinking tea can quench thirst, dispel dampness and clear heat, refresh the mind, dispel diseases and improve intelligence, which is of great benefit to human health. However, tea, as a special beverage, has its inherent taboos. Only drinking tea properly is a good habit of health care.

Extended data:

The harm of drinking strong tea for a long time;

1, the effect on the heart. According to analysis, tea contains 2%~5% caffeine, and the caffeine content in strong tea is higher. A cup of strong tea contains about 100 mg of caffeine. Excessive caffeine can lead to nervous overexcitation and insomnia. At the same time, it can also cause tachycardia, which is not good for patients with coronary heart disease who suffer from tachycardia, premature beats and atrial fibrillation.

2. The gastric juice is diluted and cannot be digested normally. Because a person normally secretes 1.5 ~ 2.5 liters of gastric juice every day, these gastric juices can reasonably digest the food that a person consumes every day, while strong tea will dilute the gastric juice, leading to indigestion, abdominal distension and abdominal pain. In particular, the stomach and digestive system of the elderly and children are relatively fragile, so we should pay more attention.

Drinking strong tea often is one of the causes of osteoporosis. Mainly because tea contains more caffeine, and caffeine can promote urinary calcium excretion and bone-building calcium loss.

4, affecting nutrient absorption. Strong tea also contains a lot of tannic acid, which can be combined with protein, vitamin B 1 and iron ions in food, so that these nutrients can not be absorbed normally, and it is easy to cause nutritional deficiency in human body and produce corresponding symptoms, such as anemia and constipation.

5, easy to constipation. Tannic acid in tea can also combine with protein in food to produce a large amount of tannic acid protein, which is difficult to digest and absorb, leading to constipation.

Reference link: People's Network-Attention! Drinking strong tea for a long time affects the health of the heart and stomach.