1, the benefits of drinking green tea often
1, which can delay aging.
Tea contains a substance called tea polyphenols, which has strong physiological activity and antioxidant capacity, so it can effectively resist aging. Tea can be regarded as a natural scavenger of human free radicals.
2. Green tea can inhibit the occurrence of cardiovascular and cerebrovascular diseases.
This is because tea polyphenols can promote fat metabolism in the body. However, fat is the main cause of "three highs" in human body, which is easy to cause cardiovascular and cerebrovascular diseases. Therefore, drinking green tea regularly is very helpful to prevent cardiovascular and cerebrovascular diseases.
3. It can prevent the occurrence of cancer.
Tea polyphenols contained in tea can prevent a variety of songs that may cause cancer in the body, and have certain lethality to a variety of cancer cells.
4, can diminish inflammation and stop diarrhea
Tea polyphenols have a very obvious killing and inhibiting effect on viruses. In medicine, people have used it to treat diseases such as influenza and dysentery, and the effect is very good.
5. Be able to beautify.
The main use method of tea beauty is to wash your face with it, which can control oil and shrink pores, prevent skin aging, and also have a good effect on reducing the damage of ultraviolet rays to the skin.
6. Protect your teeth
Tea is an alkaline drink, which contains a certain amount of fluorine, which can reduce the absorption of calcium by human body, so it has a good effect on preventing dental caries and protecting teeth.
7, refreshing
Tea contains a certain amount of caffeine, which can enhance the excitability of cerebral cortex, promote the nerve center to be in an excited state, and achieve the effect of clearing the heart and refreshing.
2. Precautions for drinking green tea
1, green tea skin care products have good efficacy and limited validity.
Although the effect of green tea skin care products is good, there are still some considerations in choosing such products. In green tea, tea polyphenols are one of the main substances that play a role in skin care and beauty. This substance has antioxidant effect, and it can replenish water and tighten skin when used in combination with vitamins B and E. However, it should be noted that tea polyphenols, as the general name of phenolic substances or their derivatives, are easy to volatilize in the air and lose their antioxidant effect. Therefore, this kind of skin care products, especially facial masks, had better be the new tea products of that year.
2, drink green tea to lose weight and prevent diseases, but drink carefully during menstruation.
Green tea contains a certain amount of caffeine. When it coexists with tea polyphenols, it can prevent the function of caffeine in the stomach, avoid stimulating the secretion of gastric acid, and make the disadvantages of caffeine not play in the body, but promote the functions of the central nervous system, heart and liver. Moreover, the aromatic compounds in green tea can also dissolve fat and prevent fat from accumulating in the body. Caffeine can also promote the secretion of gastric juice, help digestion and fat elimination. However, it is best for women not to drink more alcohol during menstruation. Studies have shown that in addition to the normal iron loss of human body, women will also lose 18 ~ 2 1 mg of iron during each menstrual period. Drink more green tea during menstruation, and more tannic acid in green tea will combine with iron molecules in food to form a large number of sediments, which will hinder the absorption of iron molecules by intestinal mucosa. Moreover, the stronger the green tea, the greater the obstacle to the absorption of iron.
3, drinking tea to lose weight misunderstanding
Myth 1: The more expensive the tea, the better the weight loss effect.
Because the effective weight-loss components of tea are tea polyphenols and theaflavins, as well as caffeine and theophylline, it is necessary to choose tea with high content of these substances, and these factors have nothing to do with the price. Green tea made of precious young leaves is rich in unoxidized polyphenols, especially catechins, which is most helpful to protect the cardiovascular system; Oolong tea and black tea fermented from adult leaves are rich in theaflavins and thearubigins which inhibit lipoxygenase, and their antioxidant efficiency is low. However, some research reports say that their weight loss effect has even increased. Too strong astringency of tea is often considered as a bad taste, but it means that the content of ester catechins is high, which is one of the effective components to lose weight.
Myth 2: Drinking light tea can help you lose weight.
Any active substance needs enough dosage to play its health role. In the study of effective weight loss, the daily intake of tea polyphenols is between 90-690mg. Just drinking three or two cups of fragrant light tea won't help you lose weight. It should be at least equivalent to 3 tablespoons a day. It may be helpful to dissolve more tea leaves.
Myth 3: The effect of drinking tea to lose weight can be maintained for a long time.
Drinking tea may not have a long-term maintenance effect on weight control. Once you stop drinking tea, you will probably regain your weight. Therefore, it may be necessary to maintain a long-term habit. However, the study also found that if the habit of drinking tea is added to diet and exercise, it will help to maintain weight loss.
Myth 4: Drink a lot of tea at night to lose weight by sleeping less.
For people who are sensitive to caffeine, drinking strong tea may affect their sleep, so drinking tea in the morning and in the morning is more appropriate. In the morning, the human body has a high metabolic rate and a heavy task, which is suitable for drinking strong tea. If you drink tea after 5 pm, it may cause insomnia at night. Reducing sleep will not improve the weight loss effect, because lack of sleep will not only reduce resistance, but also increase blood sugar and increase the hormone level that promotes appetite, so it is not worth the candle.
Myth 5: boiled water loses vitamin C, so only drink green tea brewed at 85 degrees.
The goals of losing weight, getting vitamin C and reducing caffeine are not necessarily the same. As long as the intake of fruits and vegetables is sufficient, people don't need to use tea to supplement vitamins, so they don't have to stick to the taboo of "boiling water to make tea destroys vitamin C". Because some women who lose weight have a cold constitution and low metabolic rate, drinking a lot of green tea will strengthen this constitution, which is not good for losing weight. Drinking black tea and oolong tea that need boiled water is more helpful to improve metabolic rate. At the same time, you don't have to worry about the saying that "the first sip of tea soup contains too much caffeine to eat", because caffeine is also one of the factors that help you lose weight.