Green tea refers to a typical process of taking new tea leaves without fermentation, enzyme fixation, rolling and drying. The color of the finished product and the brewed tea soup retain the green theme of the new tea. Drinking green tea regularly can prevent cancer, reduce blood fat and prevent computer radiation. Smokers can reduce the harm of nicotine.

Efficacy and function of green tea

1. anti-aging

Antioxidants contained in green tea help to fight 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 increase SOD activity and scavenge free radicals.

antibiosis

Studies have shown that catechins in green tea can inhibit some bacteria that cause human diseases without harming the proliferation 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. Reduce blood lipids

Animal experiments made by scientists show that catechins in tea can reduce total cholesterol, free cholesterol, low-density lipoprotein cholesterol and triglycerides 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.

Fitness lose weight

Green tea contains theophylline and caffeine, which can activate protein kinase and triglyceride lipolytic enzyme through multiple functions, reduce the accumulation of fat cells, and thus achieve the effect of losing weight.

5. Prevent dental caries and remove bad breath.

Green tea contains fluorine, in which catechins can inhibit the action of cariogenic 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.

Cancer prevention

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. Whitening and UV protection

Experts found in animal experiments that catechins in green tea can resist skin cancer caused by UV-B.

Old people drink green tea to make their legs and feet more flexible.

Drinking green tea often has many benefits. According to the latest report of British "Reuters News Network", a large-scale new Japanese study published in the American Journal of Clinical Nutrition found that the elderly who often drink green tea are more flexible and independent than other elderly people.

It involves nearly 654.38+400,000 participants aged at least 65. It was found that the elderly who drank the most green tea had the least risk of "functional disability" within three years. The so-called "functional disability" refers to the inability to complete some daily activities, such as shopping, doing housework, getting dressed and taking a bath.

Researchers have found that people who love to drink green tea have a healthier diet and eat more fish, fruits and vegetables. These people have higher education, lower smoking rate, fewer heart attacks and strokes, and sharper thinking. In addition, people who love to drink green tea are more socially active and have more friends. Dr. An Tian pointed out that the elderly who drink green tea have less risk of fracture and disability, and its principle needs further study and exploration.