The kidney is the main secretary of fluoride. When the body absorbs too much fluoride, it will exceed the kidneys' ability to excrete it. fluoride will build up in the body and the fluoride content in the kidneys will increase significantly, causing tea-based fluoride poisoning.
Drinking black tea after drinking alcohol is very harmful to your health. This is because theophylline in tea has a diuretic effect. After drinking a lot of alcohol, alcohol will not have time to break down and will enter the kidneys with tea, causing damage to the kidneys.
constipated tea also contains too much caffeine and theophylline, which can stimulate stomach wall cells, causing excessive stomach acid. Over time, the stomach lining will be irritated and damaged, causing inflammation, bloating, edema, erosion and even stomach ulcers.
Drinking black tea will increase blood volume, which to some extent will increase the burden on the heart. It can even cause death for patients with cardiovascular and cerebrovascular diseases.
black tea also contains a lot of tannic acid, which can interfere with the body's absorption of iron, manifested as anemia due to iron deficiency. It can also be combined with protein and vitamin B1 in foods that cause constipation.
