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The efficacy, function and taboo of various green teas
Green tea has a history of thousands of years in China. It is called "national tea" and is deeply loved by tea lovers. Here are the functions and taboos of green tea:

1. Help digestion: Green tea contains natural tannins and catechins, which can stimulate the secretion of digestive juice, promote intestinal peristalsis and help digest food.

2. Remove bad breath: Polyphenols and aromatic substances in green tea can inhibit bacterial reproduction in the mouth and effectively remove bad breath.

3. Antioxidant: Green tea is rich in catechins and polyphenols, which can scavenge free radicals in the body, delay cell aging and prevent the occurrence and development of chronic diseases.

4. Lose weight: Tea polyphenols and caffeine in green tea can promote metabolism, accelerate the decomposition and burning of fat, and achieve the effect of losing weight.

5. Lowering blood lipid: Tea polyphenols in green tea can inhibit the process of synthesizing cholesterol and triacylglycerol in the liver, which is beneficial to lowering blood lipid and preventing atherosclerosis and cardiovascular diseases.

Taboo:

1. Pregnant women: Caffeine and tea polyphenols in green tea may affect the development of the fetus. Pregnant women are advised not to drink green tea. .

2. Patients with hepatitis B or liver disease: Tea polyphenols in green tea can stimulate the liver to some extent. If people with poor liver function drink too much, it may increase the burden on the liver.

3. People who drink too much: Caffeine and tea polyphenols in green tea will stimulate the nervous system, and people who drink too much green tea may increase the burden on the nervous system.

4. Patients with hypertension and heart disease: Caffeine and tea polyphenols in green tea will stimulate the cardiovascular system to some extent. If people with heart disease or hypertension drink too much, it may cause discomfort or aggravate the condition.

In short, although green tea has many benefits, you should drink it in moderation and choose it carefully according to your physical condition. At the same time, it is suggested to choose high-quality green tea and avoid over-brewing, so as to retain the nutrients of tea.