Is there an age limit for drinking green tea?

There is no distinction between age and sex when drinking tea. There is no doubt that tea plays an important role in human health, but it also has different requirements for different people, so people in poor health should drink tea carefully. Mainly can be summarized as 3 1, as follows:

1. Avoid drinking tea when you have a fever.

Caffeine in tea will not only raise the body temperature, but also reduce the efficacy.

2. Liver patients should avoid drinking tea.

Most substances such as caffeine in tea are metabolized by the liver. If the liver is sick, drinking too much tea exceeds the metabolic capacity of the liver, which will damage the liver tissue.

Beware of drinking tea because of neurasthenia.

Caffeine in tea has the function of exciting the nerve center. Drinking strong tea for neurasthenia, especially in the afternoon and evening, will cause insomnia and aggravate the condition. You can drink tea once in the morning and once in the afternoon during the day. It is better to drink scented tea in the morning, green tea in the afternoon and no tea at night. In this way, patients will be refreshed during the day, calm and comfortable at night, and fall asleep early.

Pregnant women should avoid drinking tea, especially strong tea.

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' intelligence develop normally and avoid excessive stimulation of caffeine to the fetus, pregnant women should drink less tea or not.

5. Women should not drink strong tea during lactation.

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.

6. Patients with peptic ulcer should drink tea carefully.

Tea is a stimulator of gastric acid secretion. Drinking tea can increase the secretion of gastric acid and stimulate the ulcer surface. Drinking strong tea often will worsen the condition. However, for mild patients, you can drink some light tea 2 hours after taking the medicine. Adding sugar black tea and milk black tea is helpful to diminish inflammation and protect gastric mucosa, and also has certain effect on ulcer. Drinking tea can also block the synthesis of nitroso compounds in the body and prevent precancerous mutation.

7. Avoid drinking tea because of malnutrition.

Tea has the function of decomposing fat. Malnourished people will be more malnourished if they drink tea to decompose fat.

8. Be careful when drinking tea.

Tea has the function of exciting nerve center, and drinking strong tea after drunkenness will increase the burden on the heart. Drinking tea will also accelerate diuresis, so that toxic aldehydes in alcohol will be discharged from the kidneys before decomposition, which is very irritating to the kidneys and harmful to health. Therefore, for people with heart and kidney diseases or poor function, don't drink tea, especially don't drink a lot of strong tea; For healthy people, you can drink a small amount of strong tea. When you wake up, you can eat a lot of fruit or sip vinegar to speed up human metabolism and relieve drunkenness.

9. Take medicine with tea with caution.

There are many kinds of drugs with different properties. Whether you can take medicine with tea cannot be generalized. Tannin and theophylline in tea can change chemically with some drugs. Therefore, when taking hypnotic and sedative drugs, iron-containing blood-enriching drugs, enzyme preparation drugs, protein and other drugs, tea polyphenols are easy to react with iron and precipitate, so it is not appropriate to use tea to deliver drugs, so as not to affect the efficacy. Some Chinese herbal medicines, such as ephedra, Uncaria rhynchophylla and Coptis chinensis, should not be mixed with tea. It is generally believed that it is not advisable to drink tea within 2 hours after taking the medicine. When taking some vitamin drugs, drinking tea has no effect on the efficacy, because tea polyphenols in tea can promote the accumulation and absorption of vitamin C in the human body. At the same time, tea itself contains a variety of vitamins. Tea itself also has the functions of excitement, diuresis, blood lipid reduction and blood sugar reduction, which can improve the efficacy of the human body and restore health. In addition, people often think that it is not appropriate to drink tea when taking tonic such as ginseng antler, which is also reasonable.

10. Anemia patients should avoid drinking tea.

Tannic acid in tea can combine with iron to form insoluble final compound, which makes the body unable to obtain enough iron source, so it is not suitable for anemia patients to drink tea.

1 1. Patients with urinary calculi should not drink tea.

Urinary calculi are usually calcium oxalate stones. Because tea contains oxalic acid, it will form stones with calcium excreted through urine. If patients with urinary calculi drink a lot of tea, it will aggravate their condition.

12. Avoid drinking tea on an empty stomach.

Drinking tea on an empty stomach will dilute gastric acid, inhibit the secretion of gastric juice, hinder digestion, and even cause palpitation, headache, stomach discomfort, dizziness, upset and other "drunken tea" phenomena, and affect the absorption of protein, and also cause gastritis. If "tea drunkenness" occurs, it can be alleviated by taking candy or drinking some sugar water.

13. Avoid drinking a lot of tea before and after meals.

It is not advisable to drink tea for about 20 minutes before and after meals. If you drink tea, it will dilute the gastric juice and affect the digestion of food. Moreover, because tea contains oxalic acid, oxalic acid will react with iron and protein in food, which will affect the absorption of iron and protein by human body.

14. Avoid drinking tea before going to bed.

It is best not to drink tea within 2 hours before going to bed. Drinking tea will excite the spirit, affect sleep and even insomnia, especially the newly picked green tea. After drinking, the nerves are extremely excited and cause insomnia.

15. Avoid overnight tea.

You'd better drink tea at once. If tea leaves are left for a long time, they will not only lose vitamins and other nutrients, but also be prone to rancidity and illness.

16. Avoid drinking the first tea.

Because modern tea is inevitably polluted by pesticides, fertilizers, dust and other substances in the process of planting, processing and packaging. The first kind of tea is actually the water for washing tea, so you should rush into boiling water as soon as possible, so that the tea brewed is the most hygienic tea.

17. Avoid drinking inferior or deteriorated tea.

Tea is not easy to keep properly, and it is easy to absorb moisture and become moldy, while some people are reluctant to discard moldy tea out of the love of saving tea. Deteriorated tea contains a lot of harmful substances and germs, which is absolutely inedible. If high-quality tea is left for too long after soaking, the tea soup will also deteriorate due to oxidation and microbial reproduction, and such tea can no longer be drunk.

18. Children should not drink strong tea.

Because when the concentration of tea is high, the content of tea polyphenols is too much, which is easy to react with iron in food, which is not conducive to the absorption of iron and is easy to cause iron deficiency anemia in children. Children can drink some light tea in moderation (one third of the concentration of adult tea). For preschool children, you can drink some rough tea, because the content of tea polyphenols in rough tea is low.

19. Patients with coronary heart disease should drink tea cautiously.

For patients with coronary heart disease who suffer from tachycardia, premature beats or atrial fibrillation, caffeine and theophylline in tea are stimulants, which can enhance the heart function. Drinking a lot of strong tea will make their hearts beat faster, which often leads to their illness or aggravation. Therefore, such people can only drink some light tea; On the contrary, patients whose heart rate is generally below 60 beats/min should drink more tea, which is not only harmless, but also can improve the heart rate and has the effect of cooperating with drug treatment.

20. Old people should not drink raw tea.

The so-called green tea refers to the green baked green tea that is directly dried without twisting after fixation. The appearance of this kind of tea is naturally green, and its composition is basically the same as that of fresh leaves. Aldehydes and alcohol compounds with low boiling point are not transformed and volatilized much, and the aroma is seriously green. Drinking this kind of green tea for the elderly is very irritating to the gastric mucosa, and it is easy to get stomachache after drinking it; Young people will also feel stomach upset after drinking, which is also commonly known as "scraping the stomach." If you buy this raw tea by mistake, you'd better not make it directly. You can put it in a non-greasy iron pan, fry it slowly with slow fire, bake it to remove the green gas, and drink it after it produces a slight chestnut fragrance.

2 1. Patients with hypertension should not drink strong tea.

The amount of boiling water per gram of tea is less than 50 ml, which is called "strong tea". If hypertensive patients drink too much tea, the exciting effect of caffeine will lead to an increase in blood pressure, which is not conducive to health.

22. People with diabetes should drink more tea.

The symptoms of diabetics are hyperglycemia, thirst and weakness. Drinking tea can effectively lower blood sugar, quench thirst and enhance physical strength. Patients should generally drink green tea, the amount of tea can be slightly increased, and they can drink it several times a day. At the same time, they can also eat some pumpkin seeds or pumpkin food, which has a synergistic effect.

23. Drink light tea immediately after getting up in the morning.

Because after a day and night of metabolism, the human body consumes a lot of water and the blood concentration is high. Drinking a cup of light tea can not only replenish water, but also dilute blood and lower blood pressure. Especially for the elderly, drinking a cup of light tea immediately after getting up early is good for health. Drinking light tea is to prevent gastric mucosal damage.

24. Drink more tea when you have diarrhea.

Diarrhea can easily dehydrate people, leading to sunken fingerprints. Drink more concentrated tea. Tea polyphenols can stimulate the gastric mucosa, absorb water much faster than simply drinking boiled water, and quickly replenish water to the human body. At the same time, tea polyphenols can kill bacteria and stop dysentery.

25. Drink tea after eating greasy food.

Most greasy foods are rich in lipids or protein, and their emptying time in the stomach is long, usually about 4 hours, so they are not easy to feel hungry after eating. If food stays in your stomach for too long, you will feel full and thirsty. At this time, if you drink some strong tea, the tea juice will form emulsion with fatty foods, which is conducive to speeding up the discharge into the intestine and making the stomach comfortable. Ethnic minorities such as border areas mainly eat beef, mutton and dairy products every day. "A day without food is better than a day without tea" is the truth. In order to "reduce fat" when drinking tea, the tea can be properly soaked a little thicker, but the amount of hot tea should not be too much, otherwise it will dilute the gastric juice and affect digestion.

26. Drink tea after eating salty food.

Because eating too salty food will lead to high blood pressure, especially for patients with hypertension, and it is not advisable to eat too salty food. Too much salt in the body is harmful to health, so you should drink tea as soon as possible to induce diuresis and discharge salt. Some pickled foods also contain a lot of nitrate. After eating, nitrate can easily react with secondary amines in other foods to form nitrosamines, which are carcinogens. Drinking tea, especially high-grade green tea with high catechin content, can inhibit the formation of carcinogens and enhance immune function.

27. Drink tea after sweating.

Excessive physical labor can lead to a lot of sweating. People who work in high temperature and high heat environment will excrete a lot of sweat to regulate their body temperature. At this time, drinking tea can quickly replenish the water needed by the human body, reduce the blood concentration, accelerate the excretion of waste in the body, reduce muscle soreness and gradually eliminate fatigue.

28. Miners, X-ray doctors, computer workers, people who watch TV for a long time, and workers in printing and copying shops should drink tea.

Because this kind of workers will be more or less exposed to certain radiation, and tea polyphenols contained in tea have certain anti-radiation effect, drinking more tea is good for health.

29. Mental workers and night shift workers should drink tea.

Tea contains caffeine and so on, which has a refreshing effect. Therefore, writers, scholars and night mental workers drink more tea, which is conducive to improving thinking activities, enhancing memory and improving work efficiency.

30. Tea is suitable for speaking, telling stories and singing.

If you are engaged in voice work for a long time, you should always drink tea to moisten your throat to moisten your vocal cords and make your pronunciation crisp. It can also reduce congestion and swelling of the throat and prevent hoarseness and pharyngitis.

Smokers and passive smokers should drink more tea.