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What are the disadvantages of drinking too much tea?
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.

Tea is indeed a healthy drink, but it is better to have no more than two cups in an ordinary cup every day. After all, the human body has a great demand for water. Drinking tea when you are thirsty will make your teeth yellow, and drinking tea is good for urination. Drinking too much will often run to the toilet, which is not good for the urinary system.

Extended data:

The people below had better not drink tea.

1, constipation

Tea polyphenols in tea have a certain astringent effect on gastrointestinal mucosa, which will affect the normal digestion and absorption of food by gastrointestinal tract, leading to dry stool and constipation.

2. People with neurasthenia and insomnia

Caffeine in tea has obvious exciting effect on the central nervous system of human body, especially strong tea, which will make the human brain in an overexcited state after drinking and can not get enough rest.

3. Calcium deficiency or fracture.

Alkaloids in tea can inhibit the absorption of calcium in duodenum and promote the excretion of calcium in urine, leading to calcium deficiency and osteoporosis, making it difficult to recover from fractures.

References:

People's Network-Beware: Always drink strong tea and be alert to the four pests.

References:

People's Network-What should I do if I only drink tea after a long thirst?

References:

People's Network-Drink less tea for 5 hours. Eight kinds of people had better not drink tea.