1. Refreshing and eliminating fatigue: It was found through medical experiments that caffeine in black tea stimulates the nerve center by stimulating the cerebral cortex, promoting refreshment and concentration of thinking, thereby making the thinking response more acute and memory enhancing; it also affects the vascular system and the heart. With excitement, to strengthen the heart beat, thereby speeding up the blood circulation to facilitate metabolism, while promoting sweating and diuresis, thereby accelerating the excretion of lactic acid (the material that makes muscles feel tired) and other old waste materials in the body to achieve the effect of eliminating fatigue.
2. Shengjin Heat: Drinking black tea in the summer can quench thirst and relieve heat. This is because polyphenols, sugars, amino acids, and pectin in tea have a chemical reaction with the phlegm, and stimulate salivation, which causes the mouth to feel moist and produce moisture. Cool sense; while caffeine controls the hypothalamus's body temperature center and regulates body temperature, it also stimulates the kidneys to promote the excretion of heat and dirt and maintain the body's physiological balance.
3. Diuresis: In the combined effect of caffeine and aromatic substances in black tea, increase blood flow in the kidneys, improve glomerular filtration rate, expand renal microvessels, and inhibit renal tubular reabsorption of water, thus promoting increased urine output. This helps to eliminate lactic acid, uric acid (related to gout), excessive salt (related to hypertension), harmful substances, etc., as well as to relieve edema caused by heart disease or nephritis.
4. Anti-inflammatory and bactericidal: The polyphenol compounds in black tea have anti-inflammatory effects. Through experiments, it has been found that catechins can combine with single-cell bacteria to coagulate and precipitate proteins, thereby suppressing and eliminating pathogens. Therefore, people with bacterial dysentery and food poisoning are very helpful for drinking black tea. Folks also use thick tea for wounds, acne and Hong Kong feet.
5. Detoxification: According to experiments, tea polyalkali in black tea can absorb heavy metals and alkaloids, and precipitate and decompose. This is a boon for modern people who drink water and food from industrial pollution.
6. Strong bones: On May 13, 2002, the American Medical Association published a survey of 497 men and 540 women for more than 10 years. They pointed out that people who drink black tea have strong bones, and polyphenols in black tea (also found in green tea) inhibit destruction. The activity of bone cell material. In order to prevent and treat women's common osteoporosis, it is recommended to take a small cup of black tea every day and persist for several years. If you add lemon in black tea, strong bones, the effect is stronger, in the black tea can also add a variety of fruits, can play a synergy.
7. Anti-oxidation and anti-aging: Over the past five years, the U.S. government has funded more than 150 studies on green tea and black tea and their chemical composition. The results show that antioxidants in green tea and black tea can completely destroy cancer cells. The route of transmission of chemicals. Dr. Murray Mittleman, director of vascular epidemiology at the Beth Israel Deaconess Medical Center in Boston, said: "The efficacy of black tea and green tea is roughly the same, but black tea antioxidants are much more complex than green tea, especially for the heart." . US magazine reports that black tea has stronger anti-aging effects than garlic, broccoli and carrots.
8. Yangwei Huwei: people who have not eaten green tea will feel uncomfortable stomach, this is because the tea contains important substances - tea polyphenols have astringent, have a certain stimulating effect on the stomach, in Fasting is more irritating. Black tea is different. It is fermented and baked, and tea polyphenols produce cesium per oxidative reaction under the action of yttrium oxide. The content decreases, and the irritation to the stomach decreases. Black tea not only does not hurt the stomach, but can stomach. Regular consumption of black tea with added sugar and milk can reduce inflammation and protect gastric mucosa. It also has some effect on the treatment of ulcers.
9. Anti-cancer: The statement that tea has an anti-cancer effect is very popular. Researchers all over the world have also done a lot of explorations. However, it is generally believed that the anti-cancer effects of tea are mainly reflected in green tea, but now there are new ones. progress. Studies have found that black tea, like green tea, also has a strong anti-cancer effect.
10. Vasodilation, beneficial heart: A recent study in the medical community in the United States has to do with black tea. The study found that heart disease patients drink 4 cups of black tea a day, and the vasodilation can be increased from 6% to 10%. After being stimulated by ordinary people, the relaxation will increase by 13%.
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