1. tea polyphenols, which are helpful to delay aging, have strong antioxidant and physiological activity, and are free radical scavengers in human body. According to the research of relevant departments, the effect of 1 mg tea polyphenols on eliminating excessive free radicals harmful to human body is equivalent to 9 micrograms of superoxide dismutase (SOD), which is much higher than other similar substances. Tea polyphenols can block lipid peroxidation and remove active enzymes. According to the test results of Tomoyo in Ota, Japan, it is confirmed that the anti-aging effect of tea polyphenols is 18 times stronger than that of vitamin E. 2. It helps to inhibit cardiovascular diseases, and tea polyphenols play an important role in human fat metabolism. The human body has cardiovascular diseases such as high cholesterol and triglycerides, such as fat deposition on the inner wall of blood vessels and atherosclerotic plaques formed after vascular smooth muscle cells proliferate. Tea polyphenols, especially catechins ECG and EGC in tea polyphenols and its oxidation products theaflavins, are helpful to inhibit this mottled proliferation, reduce the formation of fibrinogen that enhances coagulation viscosity, make coagulation clear, and thus inhibit atherosclerosis. 3. Tea polyphenols that help to prevent cancer can block the synthesis of various carcinogens such as ammonium nitrite in the body, and have the function of directly killing cancer cells and improving the immunity of the body. According to relevant data, tea polyphenols (mainly catechins) in tea are beneficial to the prevention and adjuvant treatment of cancers such as gastric cancer and intestinal cancer. 4. It is helpful to prevent and treat radiation injury. Tea polyphenols and their oxidation products have the ability to absorb the toxicity of radioactive substances strontium 90 and cobalt 60. According to the clinical trials of relevant medical departments, the treatment of mild radiation sickness caused by radiotherapy with tea extract can reach more than 90%. For cytopenia, the effective rate of tea extract is 865438 0.7%; It has a good therapeutic effect on leukopenia caused by radiation. 5. It is helpful to inhibit and resist viruses. Tea polyphenols have a strong astringent effect, have obvious inhibitory and killing effects on pathogenic bacteria and viruses, and have obvious anti-inflammatory and antidiarrheal effects. Many medical units in China use tea preparation to treat acute and chronic dysentery, amebic dysentery and influenza, and the cure rate is about 90%. 6, contribute to beauty and skin care tea polyphenols are water-soluble substances. Washing your face with it can clear the greasy face, astringe pores, disinfect, sterilize, delay skin aging, and reduce the damage of ultraviolet rays in the sun to the skin. 7. Caffeine in tea can stimulate the central nervous system of human body, enhance the excitement process of cerebral cortex, and play a refreshing role. 8. Caffeine in tea can stimulate the kidney, promote the rapid excretion of urine, improve the filtration rate of the kidney and reduce the retention time of harmful substances in the kidney. Caffeine can also eliminate excessive lactic acid in urine, which helps to eliminate fatigue as soon as possible. 9. Helps to lower blood fat and help digestion. It was recorded in Materia Medica of the Tang Dynasty that the effect of tea was "to lose weight for a long time". There is a saying among the ethnic minorities in China's border areas that "tea is indispensable for a day". Because tea helps digestion and reduce fat, in today's fashionable language, it is helpful to "lose weight". This is because caffeine in tea can increase the secretion of gastric juice, help digestion and enhance the ability to decompose fat. The so-called "long-term eating makes people thin" is here. 10. The fluorine content in tea which is helpful to protect teeth and improve eyesight is high. The fluorine content per100g of dry tea is 10 mg- 15 mg, of which 80% is water soluble. If everyone drinks 10g tea every day, they can absorb 1mg- 1.5mg of water-soluble fluoride. Moreover, tea is an alkaline beverage, which can inhibit the reduction of calcium in the human body, help prevent dental caries, protect teeth and strengthen teeth. According to relevant data, the experiment of "gargling with tea after drinking" among primary school students can reduce the incidence of dental caries by 80%. According to the investigation of relevant medical units, 28.6% cataract patients have the habit of drinking tea; 7 1.4% have no habit of drinking tea. This is because vitamin C and other ingredients in tea can reduce the turbidity of eyes, and drinking tea often has a positive effect on reducing eye diseases, protecting eyes and improving vision.