It is believed that we all know a lot about the benefits of regular tea drinking. For those who love tea, we should pay attention to prevention, because there are also many precautions for tea drinking. We should pay attention to the knowledge understanding in advance. For many middle-aged and elderly people, they think that drinking tea on an empty stomach can detoxify the intestines and stomach, and some functions, but experts do not think so. If you drink tea on an empty stomach, it will bring harm to your health. So, what harm does regular tea drinking on an empty stomach do? Let's take a look at 360 common sense.
Analysis of the harm of drinking tea on an empty stomach
In the morning, when you wake up confused and your brain is in an unopened state, most people will choose to drink a cup of strong tea to refresh themselves. But modern scientific research shows that many of our diseases are caused by drinking tea on an empty stomach. It can be said that drinking tea on an empty stomach is one of the important causes of the disease.
It is said that tea should be different from person to person, not that everyone is suitable for strong tea, but in addition to this, tea should also pay attention to time. Health preservation with tea is good, but if you drink the wrong time, not only can't achieve the purpose of health preservation, but also to * bring no small harm. For example, it's not suitable to drink tea at night, because it's a rest time at night. If you drink too much tea, the caffeine in it will promote the brain to be too excited, which will greatly affect the quality of sleep, and may cause insomnia.
If you drink tea in the morning, especially on an empty stomach, it will bring serious harm. Because there is a kind of component called caffeine in tea, if you drink it in a large amount during the fasting period, the tea will directly enter the abdomen, resulting in excessive absorption of caffeine in the gut. The result is that the gastrointestinal tract produces temporary adrenocortical hyperactivity, and there are such adverse reactions as panic and frequent urination.
Experts pointed out that if we keep the bad habit of drinking tea on an empty stomach for a long time, it will not only affect the health of the spleen and stomach, but also affect our absorption of vitamin B1. Therefore, the saying "do not drink hollow tea" has been circulating in ancient China.
In summer, you should drink some tea products suitable for drinking in summer, such as green tea, which can effectively refresh and clear the heat. However, there are certain restrictions on the number of brewing. For example, the general brewing of green tea is suitable for three times. The most taboo of a cup of tea is to brew it from early to late. If the tea is brewed for a long time, some insoluble harmful substances will gradually leach out, causing injury to the body.
Eleven "military rules" for tea drinking
1. Don't drink tea if you have a fever
Caffeine in tea can not only raise the body temperature, but also reduce the efficacy.
2. Liver patients should not drink tea
Most of the caffeine and other substances in tea are metabolized by the liver. If the liver is ill and drinking too much tea exceeds the metabolism capacity of the liver, it will damage the liver tissue.
3. Drink tea carefully in case of neurasthenia
Caffeine in tea has the function of stimulating the nerve center. Neurasthenia and drinking strong tea, especially in the afternoon and evening, will cause insomnia and aggravate the disease. You can drink tea once in the morning and afternoon in the daytime, flower tea in the morning, green tea in the afternoon and no tea in the evening. In this way, patients will be invigorated during the day, at night, calm and comfortable, and can go to sleep early.
4. Pregnant women should not drink tea, especially strong tea
Tea contains a lot of tea polyphenols, caffeine and so on, which have many adverse factors to the growth of the fetus in the mother's womb. In order to make the intelligence of the fetus develop normally and avoid the excessive stimulation of caffeine to the fetus, pregnant women should drink less or not tea.
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 excited indirectly after sucking milk, which is easy to cause less sleep and more crying.
6. Patients with ulcer should drink tea carefully
Tea is a kind of stimulant for gastric acid secretion. Drinking tea can increase the amount of gastric acid secretion, increase the stimulation to the ulcer surface, and often drinking strong tea can make the condition worse. However, for mild patients, you can drink some light tea after taking medicine for 2 hours. Adding sugar black tea and milk black tea will help to diminish inflammation and protect gastric mucosa, and also have a certain effect on ulcer. Drinking tea can also block the synthesis of nitroso compounds in the body and prevent precancerous mutations.
7. No tea for malnutrition
Tea has the function of decomposing fat. For people with malnutrition, drinking tea to decomposing fat will make nutrition worse.
8. Drink tea carefully when drunk
Tea has the function of exciting nerve center. Drinking strong tea after drunk will increase the burden on the heart.
Tea drinking can also accelerate diuretic effect, so that the toxic aldehydes in alcohol can be discharged from the kidney before decomposition, which is more irritating to the kidney and harmful to health. Therefore, for people with heart and kidney disease or poor function, don't drink a lot of strong tea, especially can't drink a lot of strong tea; for people with healthy body, you can drink a small amount of strong tea, after waking up, you can eat a large number of fruits, or drink vinegar and other methods to speed up the metabolism of the human body, so that the drunk can be relieved.
9. Take medicine with tea
There are many kinds of drugs with different natures. Whether tea can be used to take medicine cannot be generalized.
The tannin and theophylline in tea can have chemical changes with some drugs. Therefore, when taking hypnotic and sedative drugs, iron containing blood tonic drugs, enzyme preparation drugs, protein containing drugs, etc., it is easy to precipitate due to the interaction between tea polyphenols and iron agent, so it is not suitable to use tea to deliver drugs, so as to prevent the effect of drugs.
Some Chinese herbal medicines, such as ephedra, uncaria, Coptis and so on, are not suitable to be mixed with tea. Generally speaking, it is not suitable to drink tea within 2 hours after taking the medicine.
While taking some vitamin drugs, tea has no effect on the efficacy, because the 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 effects of excitation, diuresis, blood lipid reduction, blood sugar reduction, etc., which can improve the efficacy of the human body and restore health.
In addition, people often think that when taking tonics such as ginseng antler, it is not suitable to drink tea, and there is a certain reason.
10. Do not drink tea for anemia patients
Tannic acid in tea can be combined with iron to form insoluble final compound, so that the body can not get enough iron source, so anemia patients should not drink tea.
11. Avoid drinking tea for patients with urinary calculi
Urinary calculi are usually calcium oxalate stones, because tea contains oxalic acid, it will form stones with the calcium excreted in urine. If patients with urinary calculi drink a large amount of tea, it will aggravate the condition.