What are the dangers of drinking too much strong tea?

Drinking some tea properly on a regular basis is good for the body, but it is best not to drink strong tea. Drinking strong tea frequently will have adverse effects on health. The most common is that it will make teeth yellow. Drinking strong tea frequently will damage kidney function, affect the body's absorption of iron, and make anemia more likely. It will also affect the absorption of calcium, making calcium deficiency more likely, and cause certain harm to the cardiovascular system.

What are the dangers of drinking too much strong tea?

1. Drinking strong tea often can easily damage kidney function

Tea is rich in oxalic acid. Drinking strong tea regularly can lead to hyperoxaluria, which can easily lead to the formation of calcium oxalate stones in the urinary tract and cause kidney stones. Secondly, drinking too strong tea will cause the kidneys to urinate frequently, which will increase the burden on the kidneys and damage them.

In addition, strong tea contains high fluoride content. The kidneys are the main excretion organ of fluoride. When the body takes in excessive fluoride that exceeds the excretion capacity of the kidneys, fluoride accumulates in the body and the fluoride content in the kidneys will increase significantly. Experiments have shown that excessive fluoride retained in the kidneys can cause damage to the cortical and medullary tubules of animal kidneys.

2. Drinking strong tea after meals can easily cause anemia

Modern medical research has found that the tannic acid in tea will form an insoluble precipitate with trivalent iron, affecting the absorption of iron in the body. In particular, drinking tea after meals will cause the iron in the food to be excreted from the body due to difficulty in absorption, causing anemia.

Substances such as iron, protein, and vitamins necessary for the human body are usually ingested in the daily diet, and tea contains a large amount of tannic acid. Drinking strong tea after a full meal will cause tannic acid and iron to combine to form an insoluble substance, which hinders the absorption of iron. If you often drink strong tea after meals, it can cause iron deficiency in the human body and lead to iron deficiency anemia.

3. Drinking strong tea often can easily increase blood pressure

Drinking strong tea is a factor that cannot be ignored in causing high blood pressure, especially for people who drink a lot of tea and like to drink strong tea. Clinical observations have shown that drinking strong tea can increase blood pressure, which may be related to the active substance caffeine contained in tea. In daily life, some people feel dizzy and have headaches after drinking tea, which may be due to high blood pressure.

Drinking too much strong tea can also cause "tea drunkenness" in people who do not drink tea often or drink tea on an empty stomach. After drinking tea, they may feel palpitations, fatigue, irritability, dizziness, blurred vision, and even unsteady standing and staggering.

4. Drinking strong tea often can easily cause stomach discomfort

Drinking strong tea regularly can cause excessive secretion of gastric acid, which can easily dilute gastric juice and prevent normal digestion. A person normally secretes 1.5 to 2.5 liters of gastric juice every day, which can properly digest the food a person consumes every day. Drinking a lot of strong tea will dilute the gastric juice and reduce the concentration of gastric juice, making it unable to digest food normally, resulting in indigestion, abdominal distension, abdominal pain and other symptoms, and some may even cause duodenal ulcers.

5. Drinking strong tea often affects the heart

According to analysis, tea contains 2% to 5% caffeine, and the caffeine content in strong tea is even higher. A cup of strong tea contains about 100 mg of caffeine. Excessive caffeine can lead to excessive nerve excitement and cause insomnia. It can also cause rapid heartbeat, which is not good for patients with coronary heart disease who suffer from tachycardia, premature beats and atrial fibrillation.