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New tea is not as new as possible. It is easy to hurt the stomach due to improper drinking. Since the new tea has just been picked, it has a short storage time and contains many unoxidized polyphenols, aldehydes and alcohols. These substances are suitable for healthy people. There is not much impact, but for patients with poor gastrointestinal function, especially those with chronic gastrointestinal inflammation, these substances will stimulate the gastrointestinal mucosa, and people with poor gastrointestinal function are more likely to induce stomach disease. Therefore, new tea should not be drunk, and new tea that is stored for less than half a month should not be drunk.
In addition, the new tea also contains more caffeine, active alkaloids and a variety of aromatic substances, these substances will also make the human central nervous system excited, patients with neurasthenia, cardiovascular and cerebrovascular disease should drink in moderation, and should not be Drink before bedtime or on an empty stomach.
Medical scientists have conducted tea drinking experiments in the summer heat days: using infrared temperature recorder to measure skin temperature, it turns out that eating cold drinks can only make people's lips cold around, can not spread the local temperature difference throughout the body, and will soon be Body temperature is balanced; after drinking hot tea, after 9 minutes, the temperature of the whole body skin can gradually drop by 1--2 °C, and it can last for 20 minutes. After gradually returning to the original temperature, the human feeling is still cool and brisk. Comfortable.
The correct method is to use it after half a month.