Five special health effects of Chinese black tea
Label: health classification: healthy diet
- Diuretic effect
Under the combined action of caffeine and aromatic substances in Chinese black tea, it can increase the blood flow of the kidney, improve the glomerular filtration rate, expand the renal microvessels, and inhibit the reabsorption of water by the renal tubules, thus contributing to the increase of urine volume. This is conducive to the elimination of lactic acid, uric acid (related to gout), excessive salt (related to hypertension), harmful substances, etc. in the body, and alleviate the edema caused by heart disease or nephritis.
- Anti-inflammatory and bactericidal effect
The polyphenols in Chinese black tea have anti-inflammatory effects. It was found through experiments that catechins can combine with single-cell bacteria to coagulate and precipitate proteins, thereby inhibiting and eliminating pathogenic bacteria. Therefore, it is beneficial for patients with bacterial dysentery and food poisoning to drink Chinese black tea. People also often use strong tea to smear wounds, bedsores and athlete’s foot.
- Antitoxic effect
It has been proved by experiments that the tea alkaloids in Chinese black tea can absorb heavy metals and alkaloids, and precipitate and decompose them, which is a good news for the modern people whose drinking water and food are polluted by industry.
- Refreshing and anti-fatigue effect
Through medical experiments, it was found that caffeine in Chinese black tea excites the nerve center by stimulating the cerebral cortex, promoting refreshing and concentration of thinking power, thus making the thinking response more sharp and enhancing memory; it also excites the vascular system and the heart, strengthens the heart beat, thus speeding up blood circulation to promote metabolism, and at the same time promoting sweating and diuresis, thereby accelerating the excretion of lactic acid (substances that make muscles feel tired) and other old waste substances in the body, and achieving the effect of eliminating fatigue.
- Effect of promoting fluid production and clearing heat
Drinking Chinese black tea in summer can quench thirst and relieve heat, because the polyphenols, carbohydrates, amino acids, pectin, etc. in tea react with the saliva and stimulate the secretion of saliva, causing the mouth to feel moist and cool; at the same time, caffeine controls the temperature center of the hypothalamus, regulates the body temperature, and it also stimulates the kidney to promote the excretion of heat and dirt, and maintain the physiological balance of the body.
In addition, Chinese black tea also has the effects of preventing caries, strengthening the stomach and intestines, helping digestion, delaying aging, reducing blood sugar, blood pressure, blood fat, anti-cancer, anti-radiation, etc.; Chinese black tea is also an excellent sports drink. In addition to relieving heat and thirst and replenishing water, if you drink it before performing sports that require physical strength and endurance (such as marathon race), because the caffeine in tea has a refreshing effect, and can promote the body to burn fat to supply heat energy and retain liver vinegar in the process of sports, so it makes people more durable.
During the processing of Chinese black tea, a chemical reaction centered on the oxidation of tea polyphenols took place. The chemical composition of fresh leaves changed greatly, and the content of tea polyphenols decreased by more than 90%, producing new components such as theaflavin and thearubin.
The American Medical Association published a survey of 497 men and 540 women for more than 10 years, pointing out that people who drink Chinese black tea have strong bones, and that the polyphenols in Chinese black tea (also contained in green tea) can inhibit the activity of destroying bone cells. The amount of polyphenols in various foods is as follows: Chinese black tea – 17.4, green tea – 12.0, red wine – 9.6, and fresh orange juice – 0.8.
The experiment of Osaka City University in Japan pointed out that after drinking Chinese black tea for one hour, the blood flow velocity of blood vessels through the heart was improved, which confirmed that Chinese black tea has a strong effect on preventing and treating myocardial infarction.
American magazine reported that the anti-aging effect of Chinese black tea was stronger than that of garlic, broccoli and carrots.
Health care: Chinese black tea can help gastrointestinal digestion, promote appetite, diuresis, eliminate edema, and strengthen cardiac function.
In terms of disease prevention: Chinese black tea has a strong antibacterial effect. Rinsing with Chinese black tea can prevent colds caused by filtering viruses, prevent tooth decay and food poisoning, and reduce blood sugar and hypertension.