The efficacy and effects of tea and contraindications

Tea is China's national treasure, China has thousands of years of tea drinking culture, now the age of the world is also drinking tea, but most of them are to China to import tea or the introduction of tea trees, the Chinese tea culture know very little, more on the efficacy of tea do not know enough, so what is the efficacy of tea?

Relieve fatigue

Drinking tea can stimulate the nerves and eliminate fatigue, which is the effect of theophyllin. In addition to refreshing the mind, theophylline can also stimulate muscle stretching, increase blood circulation, can stimulate the nerves and drive away sleepiness.

Diuretic

Tea has sweating, diuretic, thirst quenching, quenching the effect of summer. Tea tannin has a thirst-quenching effect. Theophyllin can stimulate the kidney blood vessels, making them swell, speeding up the excretion of urine.

Anti-alcohol

Tea has the effect of detoxification of alcohol and tobacco. Tea tannin and alkaloids combined to produce white crystal precipitation, through the chemical reaction can be detoxification of tobacco, through the diuretic can be detoxification of alcohol, caffeine can neutralize alcohol, so the folk with strong tea detoxification is a certain amount of reason.

Cleanse the stomach and promote digestion

Drinking tea can help digestion, dissolve fat, tea aromatic oils can go greasy, cheerful stomach. Tea can also eliminate the odor in the mouth, such as eating garlic, onions, crabs, etc., as long as the mouth chew some thousand tea leaves or some strong tea, it can remove the odor.

Bactericidal sterilization

Tea tannin has a certain bactericidal effect. Tannin and bacteria on the surface of the protein combination, can generate a white precipitation film, can inhibit the reproduction and activities of bacteria. Especially for typhoid bacteria, dysentery bacillus killing power is particularly strong. So people who drink tea regularly can get less disease.

Lower blood pressure

Green tea has a high content of vitamin C. Vitamin C can enhance the elasticity and tension of microvessels and strengthen the resistance, so hypertensive patients drink more green tea is beneficial.

Solidify teeth and prevent caries

The catechin and fluorine in tea can strengthen teeth and prevent caries. It can not only control the occurrence and development of tooth decay in children and teenagers, but also reduce plaque and eliminate bad breath, so it is also beneficial for children to drink the most suitable tea.

Health care and cancer prevention

Tea contains organic chemical composition tea polyphenol, has an important health function. According to research, daily consumption of a cup of tea (3-5 grams of green tea or 5 grams of black tea) can block the endogenous synthesis of N-nitrosoproline in the body after the intake of 300 mg of nitrate. General human daily intake of secondary amines and nitrates from food is inevitable, as long as these substances are not transformed into nitroso compounds, the human body is harmless, but once the formation of nitroso compounds, it is possible to mutate the cells and cause cancer, so drinking tea also has the ability to prevent cancer.

Aging

Tea polyphenols also have anti-aging, skin health benefits. Tea polyphenols have to enhance the toughness of human capillaries, reduce blood lipids to prevent atherosclerosis; function, but also to maintain the elasticity of body tissues, slow down cell aging, protect the skin epidermis delicate and supple. According to Japanese scholars, the anti-aging effect of tea polyphenols, more than vitamin E eighteen times.

Promote metabolism

The minerals potassium, selenium, zinc, etc. in tea have an important role in promoting human metabolism, regulating human physiological functions and promoting human growth and development.

Tea drinking dietary contraindications

1. Although the new tea shape, color and taste are the best, but it contains a large number of alcohols, aldehydes should not eat too much, easily lead to abdominal pain, diarrhea. 2. Tea has a refreshing effect, insomnia, friends should not drink too much, and strong tea should not be drunk at night to avoid insomnia.