The efficacy of Laoshan green tea has many beneficial effects on people's body and mind. There are different opinions at home and abroad, and Liu's Ten Virtues in the Tang Dynasty in China is more comprehensive. He classified the benefits of drinking tea as follows: drinking tea for health, removing fishy smell, preventing diseases and nourishing qi, dispersing sulks, benefiting people, respecting people, nourishing heart and using tea is feasible. 1. Laoshan green tea anti-aging green tea contains antioxidants, which is helpful for anti-aging. Because in the process of human metabolism, if it is over-oxidized, it will produce a lot of free radicals, which are easy to age and cause cell damage. SOD (Superoxide Dismutase) is a kind of free radical scavenger, which can effectively remove excess free radicals and prevent the harm of free radicals to human body. Catechins in green tea can significantly improve SOD activity and scavenge free radicals. 2. The antibacterial research of Laoshan green tea shows that catechins in green tea can inhibit some bacteria that cause human diseases, and at the same time, it will not harm the reproduction of beneficial bacteria in the intestine, so green tea has the function of whole intestine. Studies have shown that tea polyphenols can eliminate excessive harmful free radicals in the body, regenerate efficient antioxidant substances such as α-VE, VC, GSH and SOD in the human body, thus protecting and repairing the antioxidant system, which has a significant effect on enhancing immunity, preventing cancer and preventing aging. Drinking green tea for a long time can reduce blood sugar, blood lipid and blood pressure, thus preventing cardiovascular and cerebrovascular diseases. The medical research team of Showa University in Japan diluted 1 ml tea polyphenols solution to 1 of the concentration of ordinary tea, and put it into 10000 highly toxic Escherichia coli 0- 157. Five hours later, all the bacteria died, leaving none. 3. Animal experiments made by Laoshan green tea hypolipidemic scientists show that catechins in tea can reduce the contents of total cholesterol, free cholesterol, low-density lipoprotein cholesterol and triglyceride in plasma, and at the same time increase high-density lipoprotein cholesterol. Human experiments show that it can inhibit platelet aggregation and reduce the incidence of arteriosclerosis. Green tea contains flavonol, which has antioxidant effect, prevents thrombosis and platelet aggregation, and reduces cardiovascular diseases. 4. Laoshan green tea contains theophylline and caffeine, which can activate protein kinase and triglyceride lipolytic enzyme through multiple functions and reduce the accumulation of fat cells, thus achieving the effect of losing weight. Laoshan green tea can prevent dental caries and remove bad breath. Green tea contains fluorine, in which catechins can inhibit the action of dental caries bacteria and reduce the occurrence of dental plaque and periodontitis. Tannic acid contained in tea has bactericidal effect, which can prevent food residues from breeding bacteria, so it can effectively prevent bad breath. 6. Laoshan green tea can prevent cancer. Green tea can inhibit some cancers, but its principle is limited to the inference stage. Drinking more tea is bound to have a positive encouraging effect on preventing cancer. 7. Laoshan green tea whitening and ultraviolet protection experts found in animal experiments that catechins in green tea can resist skin cancer caused by UV-B. Laoshan green tea can improve indigestion. Recent research reports show that green tea can help improve indigestion, such as acute diarrhea caused by bacteria. You can drink a little green tea to relieve the disease.