1, cancer prevention
Tea polyphenols can block the synthesis of carcinogens such as ammonium nitrite in the body, which can directly kill cancer cells and improve 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.
2. Prevention and treatment of 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.
3. Inhibit and resist viruses and bacteria
Tea polyphenols have strong convergence, obvious inhibition and killing effects on pathogenic bacteria and viruses, and 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%.
4. Wake up and cheer up
Caffeine in tea can stimulate the central nervous system of human body, enhance the excitement process of cerebral cortex, and have the functions of refreshing, benefiting thinking and clearing heart.
5, diuretic to relieve fatigue
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.
6, tooth protection and vision
The fluorine content in tea is high, and the fluorine content per 100 g of dry tea is 100 ~ 15 mg, of which 80% is water soluble. If everyone drinks 10g tea every day, it can absorb 1 ~ 1.5mg of water-soluble fluoride, and tea is an alkaline drink, which can inhibit the decrease of calcium in human body, and is beneficial to preventing dental caries, protecting teeth and strengthening teeth.
7, delay aging
Tea polyphenols have strong oxidation resistance and physiological activity, and are scavengers of human free radicals. According to the research of relevant departments, the efficacy of 1 mg tea polyphenols in scavenging excessive free radicals harmful to human body is equivalent to 9 μ g superoxide dismutase, which is much higher than other similar substances. The anti-aging effect of tea polyphenols is 18 times stronger than that of vitamin E, which was confirmed by the experiment of Tomoyo in Ota.
8, inhibit cardiovascular disease
Tea polyphenols play an important role in human fat metabolism. Tea polyphenols, especially catechins ECG and EGC in tea polyphenols and its oxidation products theaflavins, are helpful to inhibit the proliferation of cardiovascular diseases such as high cholesterol and triglyceride content, fat deposition on the inner wall of blood vessels, and atherosclerotic plaques formed after vascular smooth muscle cells proliferate, so as to reduce fibrinogen which leads to enhanced blood coagulation viscosity and clear blood coagulation, thus inhibiting atherosclerosis.