(1) Tea can refresh the mind and enhance the ability of thinking and memory.
(2) Tea can eliminate fatigue, promote metabolism and maintain the normal functions of the heart, blood vessels and gastrointestinal tract.
(3) Drinking tea is of great benefit to the prevention of dental caries. A survey in Britain shows that children who drink tea regularly can reduce their dental caries by 60%.
(4) Tea contains many trace elements beneficial to human body.
(5) Tea can inhibit malignant tumor, and drinking tea can obviously inhibit the growth of cancer cells.
(6) Drinking tea can inhibit cell aging and prolong life. The anti-aging effect of tea is more than 18 times that of vitamin e.
(7) Drinking tea can delay and prevent the formation of lipid plaque in vascular intima, and prevent arteriosclerosis, hypertension and cerebral thrombosis.
(8) Drinking tea can excite the central nervous system and enhance exercise ability.
(9) Drinking tea has a good slimming and beauty effect, especially oolong tea.
(10) Drinking tea can prevent senile cataract.
(1 1) Tannic acid contained in tea can kill many kinds of bacteria, so it can prevent and treat stomatitis, pharyngolaryngitis, enteritis, dysentery, etc.
Drinking tea can protect people's hematopoietic function. Tea contains anti-radiation substances. Drinking tea while watching TV can reduce the harm of TV radiation and protect your eyesight.
(13) Drinking tea can maintain the normal acid-base balance of blood. Tea contains alkaloids such as caffeine, theophylline, theobromine and xanthine, and is an excellent alkaline drink. Tea can be quickly absorbed and oxidized during the extraction process, resulting in high concentration of alkaline metabolites, thus neutralizing acidic metabolites in the blood in time.
(14) heatstroke prevention and cooling. After drinking hot tea for 9 minutes, the skin temperature drops 1-2 degrees Celsius, which makes people feel cool and dry, while after drinking cold drinks, the skin temperature drops slightly.
Reasonable drinking tea is beneficial to human body, while unreasonable drinking tea is harmful to human body.
Drinking tea depends on physical fitness. Chinese medicine believes that people's physique can be divided into dry heat and deficiency cold, and tea can be divided into coolness and warmth through different production processes, so it is also important to drink tea with different constitutions. People with hot and dry constitution should drink herbal tea, while those with deficient and cold constitution should drink warm tea.
It is best to drink black tea at night. Because green tea belongs to non-fermented tea, it has high content of tea polyphenols, maintains its original properties and is irritating; Black tea is a completely fermented tea. Although the content of tea polyphenols is low, it is mild after "aging" and suitable for drinking at night. Especially for people with weak spleen and stomach, adding some milk when drinking black tea can play a certain role in warming the stomach.
However, people who are easily excited or sensitive, have poor sleep and are weak should drink less or not drink tea at night. In addition, when drinking tea at night, you should put less tea leaves and don't make the tea too strong. It is best to drink tea after meals, because drinking tea on an empty stomach will harm your health, especially for people who don't drink tea often, it will inhibit the secretion of gastric juice, hinder digestion, and seriously cause palpitations, headaches and other "tea drunk" phenomena.
Eight misunderstandings of drinking tea
I like drinking new tea.
Because of its short storage time, new tea contains more unoxidized polyphenols, aldehydes and alcohols, which has a strong stimulating effect on human gastrointestinal mucosa and is easy to induce stomach diseases. Therefore, drink less new tea and avoid new tea that has been stored for less than half a month.
Second, drinking tea for the first time
Because tea is polluted by harmful substances such as pesticides in the process of planting and processing, there will always be some residues on the surface of tea, so the first-time tea should be discarded because of its washing function.
Third, drink tea on an empty stomach.
Drinking tea on an empty stomach will dilute gastric juice, reduce digestive function, increase water absorption rate, and lead to a large number of bad components in tea entering the blood, causing dizziness, palpitation, weakness of hands and feet and other symptoms.
Fourth, drink tea after meals.
Tea contains a lot of tannic acid, which can react with iron in food to form new substances that are difficult to dissolve. Over time, it will cause iron deficiency and even induce anemia. The correct way is to drink tea an hour after meals.
Five, have a fever to drink tea.
Tea contains theophylline, which can raise body temperature. Drinking tea for patients with fever is tantamount to "adding fuel to the fire".
Six, patients with ulcers drink tea
Caffeine in tea can promote gastric acid secretion, increase gastric acid concentration, induce ulcers and even perforation.
Seven, drinking tea during menstruation
Drinking tea during menstruation, especially strong tea, will induce or aggravate menstrual syndrome. Medical experts have found that compared with people who don't drink tea, people who have tea habits are 2.4 times more likely to have menstrual tension, and those who drink more than 4 cups of tea a day are 3 times higher.
Eight, unchanged
The climate is different all year round, and the types of tea should be adjusted accordingly. It is advisable to drink scented tea in spring, which can disperse the cold evil accumulated in the body all winter and promote the hair growth of human yang; It is advisable to drink green tea in summer. Green tea tastes bitter and cold, and it can clear away heat and relieve summer heat, detoxify, enhance gastrointestinal function, promote digestion, prevent diarrhea and skin boils infection. Green tea should be drunk in autumn. Green tea is neither cold nor hot, which can completely eliminate the residual heat in the body, restore sweetness and warmth, and make people feel refreshed; It is advisable to drink black tea in winter, which is sweet and rich in protein and has a certain nourishing effect.
Correct brewing method of green tea
1. When brewing green tea, the water temperature should be controlled at about 80℃ ~ 90℃. If green tea powder is brewed, it can be brewed with warm water of about 40℃ ~ 60℃. The serving size is 2g of green tea powder and 450ml of boiled water.
Don't drink the first tea, just shake it after pouring hot water.
3. The brewed tea should be drunk within 30 minutes to 60 minutes, otherwise the nutrients in the tea will become unstable.
4. Green tea powder should not be soaked too thick, otherwise it will affect the secretion of gastric juice, and it is best not to drink it on an empty stomach.
Because tea scale contains heavy metals, it should be cleaned up in time.
Studies have shown that tea scale contains many heavy metals such as cadmium, lead, iron, arsenic and mercury. When drinking tea, they will be brought into the human body and combine with protein, fat, vitamins and other nutrients in food to form insoluble sediments, which hinder the absorption of nutrients. These oxides can also cause pathological changes and dysfunction of human nervous system, digestive system and urinary hematopoietic system, especially arsenic and cadmium can cause cancer and cause fetal malformation. Therefore, anyone who has the habit of drinking tea should always clean up the tea dirt on the inner wall of the tea set in time.
Old people get up early to drink light tea.
Some old people like to get up early and drink a cup of strong tea, which is actually bad for their health. Because drinking strong tea on an empty stomach in the morning will not only cause gastrointestinal discomfort, loss of appetite, but also damage the normal function of the nervous system. When the elderly drink tea in the morning, they can pour the first sip of tea and drink two sips of tea. It is better to add a little sugar and a proper amount of white chrysanthemum to tea.