Polyphenols, such as catechins, are recognized as the key components in green tea, which have many health functions, including preventing cancer, improving cardiovascular health, losing weight and resisting ionizing radiation. In addition, green tea is the tea with the most kinds of vitamins and the richest content. Compared with other teas, green tea has better anticancer effect. Many studies have shown that green tea can reduce the risk of tumors in breast, prostate, lung, mouth, bladder, colon, stomach, pancreas and other parts. From the point of view of Chinese medicine, green tea is slightly cold, which helps to reduce fire. People with cold stomach should drink less, while those with hot and dry constitution who are prone to get angry and strong should drink it.

Second, green tea moistens and loses weight

Besides catechins, tea polysaccharides and tea saponin, which are common in green tea and black tea, oolong tea also contains some special functional components. For example, some oolong tea varieties are rich in methylated catechins, which have the functions of anti-allergy, anti-inflammation, anti-oxidation, liver cell protection and blood pressure reduction. According to some related literature reports, compared with other teas, oolong tea has a better effect in losing weight. From the point of view of traditional Chinese medicine, oolong tea is flat and can clear away accumulated heat in the body, which is especially suitable for drinking in autumn and can relieve autumn dryness.

Third, white tea can inhibit bacteria and radiation.

The chemical composition of white tea is generally close to that of green tea. According to some related literature reports, compared with other teas, white tea has better antibacterial effect. In addition, white tea also has a good anti-radiation effect, and white tea extract is used in the development of facial skin care products in the United States and Europe. White tea is cool and can reduce fire and dry.

Fourth, black tea warms the stomach and protects the heart

Theaflavins are the most important functional components in black tea. A large number of medical studies show that drinking black tea can help regulate the contents of low-density lipoprotein and high-density lipoprotein in human arteries, thus reducing the probability of cardiovascular diseases. In addition, theaflavins can also resist oxidation and cancer, and prevent chronic inflammation and obesity. According to the existing literature reports, compared with other teas, general black tea has a better effect in preventing cardiovascular diseases. From the perspective of traditional Chinese medicine, black tea is warm and has the function of warming the stomach. People with deficiency-cold constitution and the elderly should drink warm black tea.

Five, black tea to keep out the cold and reduce blood fat

Black tea belongs to post-fermented tea. Under the action of microorganisms, tea undergoes a series of complex chemical reactions, producing some components beneficial to human body.

Pu 'er tea and Fuzhuan tea are representatives of different types of black tea in China, and their active components are different, but they both have lipid-lowering effects. At present, the research shows that Pu 'er tea has health-care functions such as lowering blood sugar, lowering blood lipid and resisting virus, and the lipid-lowering effect may be related to statins in it. Fuzhuan tea also has a good function of reducing fat and greasy, and has a strong function of reducing fat and losing weight. There are many kinds of minerals in black tea, and many of them are higher than other teas. Black tea is warm, which helps to keep out the cold and is suitable for people with deficiency and cold constitution.

Six, yellow tea is suitable for everyone.

At present, there is relatively little research on the health care efficacy of yellow tea. Compared with the cool green tea and warm black tea, yellow tea is between them, which is almost suitable for ordinary people.