Currently, the more confirmed health benefits of tea include preventing cancer (including lung cancer, esophageal cancer, liver cancer, colon cancer, etc.), regulating blood lipids, lowering blood sugar, enhancing immune function, and preventing smoking damage.

Drinking tea can repair DNA damage caused by smoking, and the effect is very good. This is a conclusion we obtained through human experiments, which is also relatively leading worldwide.

Now there is a lot of research on tea worldwide, but most of it is animal experiments, and tea extracts are used. We conducted human experiments using tea soup brewed from tea leaves, proving that people can obtain such benefits as long as they persist in drinking tea correctly in daily life.

There are various effective nutritional components in tea, such as the familiar tea polyphenols, as well as theanine, vitamins, caffeine, etc. According to the production principle, Chinese tea is divided into six categories, namely green tea, black tea, yellow tea, white tea, oolong tea, and dark tea.

Later, some reprocessed teas, such as scented tea, were developed based on these six categories. The effective components in various teas are different, and their effects are also different.

Green tea protects cardiovascular health. Green tea is a non-fermented tea, represented by West Lake Longjing, Dongting Biluochun, and Huangshan Maofeng. Its main effects are preventing cancer and cardiovascular diseases, as well as antioxidation, improving immunity, inhibiting and killing bacteria, etc.

White tea relieves anxiety. Tea can be classified into two types according to different classification methods. One is the more familiar Anji white tea, which is actually a type of green tea. Because its taste is more mellow than green tea, it has become very popular in recent years. Jiang Heyuan said that the main effects of white tea include protecting brain nerves, enhancing memory, and reducing anxiety.

In addition, the theanine in white tea can neutralize some of the effects of caffeine. People who are afraid that drinking tea will affect their sleep can drink some white tea. Another type is white tea produced in Fuding, Fujian. This tea has a relatively small output and a stronger taste than ordinary green tea. According to current research, this tea has good effects on regulating immunity and lowering blood sugar.

Oolong tea and black tea reduce cholesterol. Oolong tea is a semi-fermented tea, represented by Wuyi Rock Tea (Dahongpao), Tieguanyin, Dongding Oolong Tea, and Phoenix Dancong; while black tea is a fully fermented tea, represented by Qimen black tea from Anhui and Dianhong from Yunnan. Black tea from India and Sri Lanka is also a world-renowned product. Because black tea is fermented, it is less irritating than green tea, and its effects are also different. It can promote blood circulation and reduce cholesterol.

Dark tea helps with weight loss and fat elimination. Dark tea is a post-fermented tea, and the most familiar one is Pu'er tea. It contains a high total amount of tea polyphenols, which has a good effect on lowering blood lipids and losing weight.

It is reported that Professor Bernard Jacotot of the Henri Lendo Hospital in Paris asked 20 patients with excessive blood fat to drink 3 bowls of Yunnan Pu'er tea every day. After one month, it was found that the fat in the patients' blood was reduced by almost 1/4. Japan's "Health" magazine introduced that Pu'er tea can inhibit weight gain and reduce cholesterol and triglycerides in the blood.

Some famous teas, such as Mingqian tea in Longjing, have the same types of effective components as ordinary tea, but the content may be different. Because Mingqian tea is picked early, it contains higher levels of theanine and vitamin C, and lower levels of tea polyphenols.

"For the sake of health preservation, there is no need to buy particularly expensive tea. So which tea is the most nutritious? Experts believe that in terms of the total amount of polyphenols, each type of tea is similar. However, because the processing technology of green tea is the simplest, its nutritional components are preserved more completely.