Drinking black tea often harms

Black tea is one of the most common tea drinks, which is basically harmless to the human body. If you drink black tea in large quantities for a long time, it may affect the function of the spleen and stomach, leading to decreased sleep quality and induced anemia.

1. Affect the function of the spleen and stomach

If you drink black tea in large quantities for a long time, tea will dilute gastric juice. Caffeine, theophylline and other ingredients in tea will stimulate gastrointestinal mucosa, affecting digestive function, causing stomach distension, stomachache and other discomfort.

2. Cause sleep quality to decline

Black tea is rich in caffeine, tea polyphenols and other substances, which will stimulate the nervous system after drinking in large quantities. At this time, the cerebral cortex will be excited, which can affect sleep quality.

3. Induce anemia

Some substances in tea will also interfere with the absorption of iron elements. If you drink a large amount of tea for a long time, it may induce iron deficiency anemia.