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Advantages and disadvantages of drinking green tea
Green tea is one of the main tea leaves in China, which refers to a beverage made from the new leaves or buds of tea trees without fermentation, and through the processes of enzyme fixation, shaping and drying. Let's take a look at the advantages and disadvantages of drinking green tea!

Benefits of drinking green tea 0 1 catechins contained in green tea have special effects on anti-aging. Looking at all tea varieties, Pu 'er contains the most catechins, and its anti-aging effect is much better than other teas.

02 lowering cholesterol

Scientists have done experiments on animals, which prove that catechins in tea can reduce the content of cholesterol in blood. Human experiments show that it can inhibit platelet aggregation and reduce the occurrence of arteriosclerosis. Green tea contains flavonols, which can also prevent thrombosis and platelet agglomeration and reduce cardiovascular diseases.

Prevention 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.

04 improve memory

Tea polyphenols in tea can help the brain to adjust locally, improve memory and improve learning efficiency. Foreign studies have confirmed that drinking tea can prevent and treat nervous system diseases, especially the cognitive impairment of the elderly.

05 bacteriostasis and antivirus

Tea polyphenols in tea have strong astringency, obvious inhibition and killing effects on pathogenic bacteria and viruses, and obvious anti-inflammatory and antidiarrheal effects.

06 radiation protection

Foreign studies show that tea polyphenols and their oxides can absorb some radioactive substances, protect cells from radiation damage and help repair damaged cells. Clinical research shows that tea extract can treat mild radiation sickness caused by radiotherapy in tumor patients, and treat hemocytopenia and leukopenia caused by radiation with good effect.

Clear bad breath

Green tea contains fluorine, among which catechin can inhibit dental caries and reduce the occurrence of dental plaque and periodontitis. Moreover, tannic acid contained in tea has a certain bactericidal effect, which can prevent food residues from breeding bacteria, thus avoiding the occurrence of bad breath.

08 diuresis

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.

fresh and cool

Caffeine in tea 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.

10 beauty salon

Green tea has the effect of beauty beauty. The main method is to wash your face with green tea, which can control oil, shrink pores and prevent skin aging.

1 1 Protect teeth

Green tea is an alkaline drink containing 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.

12 lose weight

Drinking green tea can lose weight. Many experiments have proved that if a person drinks green tea regularly, it can reduce fat, which will make your body lighter, digest fat and make you thinner.

Disadvantages of drinking green tea 0 1 There are pesticide residues.

Tea is polluted by harmful substances such as pesticides during planting and processing, and there will always be some residues on the surface of tea. So don't drink tea all over.

Drinking a lot of tea is harmful to health.

Drinking a lot of strong tea often leads to a lot of discomfort, such as easy dilution of gastric juice and inability to digest normally. The normal gastric juice secreted by a person every day is 1.5-2.5 liters, which can reasonably digest the food that a person takes in every day. When drinking a lot of strong tea, it will dilute the gastric juice, reduce the concentration of gastric juice, make the gastric juice unable to digest food normally, and cause indigestion, abdominal distension, abdominal pain and other symptoms, and some even cause duodenal ulcer.

Not suitable for people who drink green tea and 0 1 constipation.

Tea polyphenols in tea have a certain astringent effect on gastrointestinal mucosa, which will affect the normal digestion and absorption of food by gastrointestinal tract, leading to dry stool and constipation.

02 pregnant women

Tea contains a lot of tea polyphenols and caffeine, which has many unfavorable factors for the growth of the fetus in the mother's womb. In order to make the fetus develop normally and avoid excessive stimulation of caffeine to the fetus, pregnant women should drink less or not drink tea.

Anemic person

For people with anemia, there is iron deficiency in the body. Green tea contains tannic acid, which will synthesize insoluble end products with iron. If people with anemia still drink green tea, there will be fewer sources of iron in their bodies.

04 during medication

Green tea contains a lot of tannic acid and tannic acid, which may weaken the medicinal properties and affect the function of drugs. It is worth noting that this medicine should be taken with water instead of tea.

A person with a bad stomach

Green tea is cold, and people who have a bad stomach can easily cause flatulence and other symptoms when drinking green tea.

Drunk crowd

There is a habit of drinking a cup of strong tea after drunkenness in rural areas. In fact, it is not suitable for drinking tea after being drunk. Strong tea will increase the burden on the heart, and green tea will also accelerate diuresis. It is the toxic aldehyde in alcohol that is excreted through the kidney before decomposition, which is very irritating and harmful to the human kidney.

People with neurasthenia and insomnia

Because caffeine in tea has obvious exciting effect on human central nervous system, drinking tea, especially strong tea, will make people's brains in an overexcited state and can't get rest.

08 menopausal women

In addition to dizziness and general fatigue, menopausal women sometimes have accelerated heartbeat and poor sleep quality. If they drink too much tea, these symptoms will get worse. Therefore, people who like to drink green tea should drink less and avoid drinking strong tea if they are at these special stages.

09 menstrual women

Menstrual blood will consume iron in the body, and tannic acid in tea will hinder the absorption of iron in food.

10 patients with urinary calculi

Patients with urolithiasis are not suitable for drinking green tea. Because green tea leaves contain oxalic acid, and urinary stones are usually calcium oxalate stones. Drinking green tea for patients with urinary calculi can easily combine calcium excreted in urine with oxalic acid to form calcium oxalate stones, which will aggravate the condition.

1 1 lactating population

Drinking strong tea during lactation, too much caffeine will enter the milk, and children will be indirectly excited after breastfeeding, which will easily lead to less sleep and more crying.

12 malnourished people

People with malnutrition are not suitable for drinking green tea. Because the leaves of green tea have a certain role in decomposing fat, which affects the body's absorption of nutrients, malnourished people will drink green tea, making the body even less nutritious.

Precautions for drinking green tea 0 1 Drink less tea.

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.

Don't drink too strong tea.

Strong tea can make the human body? Excited? Excessive increase has a bad effect on cardiovascular system and nervous system. Patients with cardiovascular diseases may have tachycardia or even arrhythmia after drinking strong tea, which leads to repeated illness.

Do not drink tea on an empty stomach.

Drinking tea on an empty stomach will dilute gastric juice, reduce digestive function, and the absorption rate of water is high, which will lead to a large number of bad components in tea entering the blood, which will lead to dizziness or palpitation and other symptoms, and will also lead to limb weakness, so it is best not to drink green tea on an empty stomach.

Don't drink 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.