Specific efficacy
Green tea is known as "national drink" in China. A large number of studies in modern science have confirmed that tea does contain < P > biochemical components closely related to human health. Tea not only has pharmacological effects such as refreshing mind, clearing away heat and relieving summer heat, promoting digestion and resolving phlegm, removing tiredness and losing weight, clearing heart and relieving restlessness, detoxifying and sobering up, promoting fluid production to quench thirst, reducing fire and improving eyesight, stopping dysentery and removing dampness, but also has certain pharmacological effects on modern diseases, such as radiation diseases, cardiovascular and cerebrovascular diseases, cancer and so on. The main components of tea with pharmacological effects are tea polyphenols, caffeine, lipopolysaccharide, theanine and so on. The specific functions are:
Anti-aging
It is helpful to delay aging. Tea polyphenols have strong antioxidant and physiological activity, and are free radical scavengers in human body. Studies have proved that the efficacy of 1 mg tea polyphenols in scavenging excessive free radicals harmful to human body is equivalent to 9 mg superoxide dismutase, which is much higher than other similar substances. Tea polyphenols can block lipid peroxidation and scavenge active enzymes. According to the results of Ota Tomoyo test in Japan, it is confirmed that the anti-aging effect of tea polyphenols is 1.8 times stronger than that of vitamin E.
Inhibiting diseases
It is helpful to inhibit cardiovascular diseases. Tea polyphenols play an important role in human fat metabolism. Human cholesterol,
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triglyceride, etc. are high, and vascular diseases such as fat deposition on the inner wall of blood vessels and atherosclerotic plaques are formed after vascular smooth muscle cells proliferate. Tea polyphenols, especially catechins ECG and EGC in tea polyphenols and their oxidation products theaflavins, are helpful to inhibit this mottled proliferation, reduce fibrinogen which forms enhanced blood coagulation viscosity, and make blood coagulation clear, thus inhibiting atherosclerosis.
Anti-carcinogenesis
Tea polyphenols can prevent the synthesis of various carcinogens such as ammonium nitrite in the body, and have the effects of directly killing cancer cells and improving the body's immunity. According to relevant data, tea polyphenols in tea are beneficial to the prevention and adjuvant treatment of gastric cancer, intestinal cancer and other cancers.
Radiation protection
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 91 and cobalt 61. According to the clinical trials of relevant medical departments, the treatment of mild radiation sickness caused by tumor patients during radiotherapy can reach over 91% with tea extract. For cytopenia, the effective rate of tea extract treatment reached 81.7%; It has a better therapeutic effect on leukopenia caused by radiation.
anti-virus bacteria
are helpful to inhibit and resist the tea polyphenols of virus bacteria, which has strong convergence effect, obvious inhibition and killing effect on pathogenic bacteria and viruses, and obvious anti-inflammatory and antidiarrheal effects. Many medical units in China use tea preparations to treat acute and chronic dysentery, amebic dysentery and influenza, and the cure rate is about 91%.
Beauty and skin care
Tea polyphenols are water-soluble substances, which can clear greasy face and astringe pores, and have the effects of disinfection, sterilization, anti-aging of skin, and reducing the damage to skin caused by ultraviolet radiation in sunlight.
Refreshing the brain
Caffeine in tea can stimulate the central nervous system of the human body, enhance the excitement process of the cerebral cortex, and have the effects of refreshing the mind and clearing the heart. It also has a certain effect on relieving migraine.
diuresis helps 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.
Relieve fatigue
Green tea contains powerful antioxidants and vitamin C, which can not only scavenge free radicals in the body, but also secrete hormones against stress. A small amount of caffeine contained in green tea can stimulate the central nervous system and cheer up the spirit. Because of this, we recommend drinking green tea in the morning to avoid affecting sleep.
protecting teeth and improving eyesight
The fluorine content in tea leaves is high, with the fluorine content of 11-15 mg per 1,111 g of dry tea, and 81% of them are water-soluble components. If each person drinks 11 grams of tea every day, he can absorb 1 mg-1.5 mg of water-soluble fluorine, and tea is an alkaline drink, which can inhibit the reduction of calcium in human body, which is beneficial to preventing dental caries, protecting teeth and strengthening teeth. The experiment of "treatment of tea gargling after drinking" among pupils can reduce the rate of dental caries by 81%. Among cataract patients, 28.6% have the habit of drinking tea; 71.4% have no habit of drinking tea. This is because vitamin C and other ingredients in tea can reduce the opacity of eyes, and drinking tea often has a positive effect on reducing eye diseases, protecting eyes and improving eyesight.
reducing blood fat
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is helpful to reduce blood fat and help digestion. In the Tang Dynasty, the effect of tea was recorded as "eating for a long time makes people thin". There is a saying among ethnic minorities in China's border areas that "you can't live without tea for a day". Because tea helps to digest 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 and help digestion.