1. Frequent drinking of strong tea can easily lead to physical discomfort, such as gastric juice dilution, resulting in indigestion.

2. If you drink too much strong tea, the combination of tannic acid and iron will become more active, affecting the body's absorption of iron, and may lead to anemia in the long run.

3. Excessive tea drinking will increase the burden on the human kidneys.

4. Tea contains a large amount of caffeine, which can aggravate the conditions of patients with gastrointestinal diseases, neurological disorders, lung diseases, etc.

5. Pregnant women are not suitable for tea, etc. Therefore, it is recommended that you drink some green tea in moderation, but not too much. ?

Extended information:

Drinking tea at 4 points in time can damage the kidneys and cause cancer

1. On an empty stomach

Because tea contains coffee Because of alkaloids, drinking tea on an empty stomach can easily cause the intestines to absorb too much caffeine, which can cause hyperactivity symptoms in some people, such as palpitation, dizziness, weakness in hands and feet, and trance. People who do not drink tea regularly, especially those who drink tea on an empty stomach in the morning, are more likely to suffer from the above symptoms. This is called tea drunkenness. Once tea drunkenness occurs, you can hold candies in your mouth or drink some sugar water to relieve it.

2. When drunk

Tea can excite the nerve center. Drinking strong tea after drunkenness will increase the burden on the heart. For the elderly with poor heart and kidney function, they should especially not drink a lot of strong tea after drinking. They can use methods such as eating a lot of fruits or drinking vinegar in small sips to speed up the body's metabolism and relieve drunkenness.

3. Before going to bed

Theophylline and other substances in tea have obvious stimulating effects on the central nervous system after being absorbed by the human body. Drinking tea will excite the mind and affect sleep. , and even lead to insomnia, especially for newly picked green tea, the effect is more obvious. In addition, tea has a diuretic effect. Elderly people who drink tea before going to bed are more likely to urinate frequently at night and affect their sleep quality.

4. Medication period

Some elderly people suffering from chronic diseases need to take medicine for a long time, and it is not suitable to drink tea while taking many medicines. For example, sedative and sleep-aiding drugs, anti-arrhythmic drugs, etc. Theophylline can reduce the analgesic effect of some drugs, so you should not drink tea while taking analgesics.

People's Daily Online - What are the dangers of drinking too much tea every day?