Tea is a well-known beverage, which contains more than 600 chemical components, including nutrients that are very beneficial to human body. But some friends also have many misunderstandings about tea, which may bring hidden dangers to health. Pay attention to the amount of tea and drink 2‐6 grams of tea every day. Although tea contains a variety of vitamins and amino acids, drinking tea has a certain effect on removing oil, enhancing nerve excitement, promoting digestion and diuresis. But the more you drink, the better, and not everyone is suitable for drinking tea. Generally speaking, 65438+ 0-2 times a day, 2-3 grams each time, is more appropriate. People with neurasthenia, gastropathy and intestinal ulcer should not drink tea, nor should lactating women, pregnant women and infants. Fresh tea should be stored for more than half a month. Because of the short storage time, it contains more unoxidized polyphenols, aldehydes and alcohols, which has a strong stimulating effect on human gastrointestinal mucosa and is easy to induce stomach diseases, so it is advisable to drink less new tea. It is not advisable to drink too strong tea. Strong tea can make people "excited" excessively, which has adverse effects on cardiovascular system and nervous system. People with cardiovascular diseases may have a rapid heartbeat and arrhythmia after drinking strong tea, which may make the condition repeat. Don't drink tea all over your body. Tea will be polluted by harmful substances such as pesticides during planting and processing, and there will always be some residues on the surface of tea. Therefore, the first tea has a washing function and should be discarded. For morning tea drinkers, drinking tea before going to bed is particularly important. After drinking tea before going to bed, many people find it difficult to fall asleep, and even affect their mental state the next day, especially those with neurasthenia and insomnia.

Do not drink tea on an empty stomach or after meals. Drinking tea on an empty stomach will dilute gastric juice, reduce digestive function, increase water absorption rate, lead to a large number of bad ingredients in tea, and cause dizziness, palpitation, weakness of hands and feet and other symptoms. Tea contains a lot of tannic acid, which can react with iron in food and generate new substances that are difficult to dissolve. Over time, it will lead to anemia. The correct way is to drink tea an hour after meals.

It is not advisable to drink tea after drinking. Theophylline in tea can quickly diuretic the kidney, so that acetaldehyde that has not yet been decomposed enters the kidney prematurely. Acetaldehyde has a stimulating effect on the kidney, which will affect the renal function. Not only that, alcohol after drinking is also very stimulating to the cardiovascular system, and tea also has the effect of exciting the heart. The combination of the two enhances the stimulation to the heart.