1. Diuretic effect: Under the combined action of caffeine and aromatic substances in black tea, it increases the blood flow of the kidneys, improves the glomerular filtration rate, expands renal microvessels, and inhibits the reabsorption of water by the renal tubules. , thus promoting an increase in urine output. This will help eliminate lactic acid, uric acid (related to gout), excess salt (related to high blood pressure), harmful substances, etc. in the body, as well as alleviate edema caused by heart disease or nephritis.

2. Anti-inflammatory and bactericidal effects: The polyphenols in black tea have anti-inflammatory effects. Experiments have found that catechins can bind to single-cell bacteria to coagulate and precipitate proteins, thereby inhibiting and eliminate pathogenic bacteria. Therefore, it is very beneficial for patients with bacterial diseases and food poisoning to drink black tea. People also often use strong tea to apply to wounds, bedsores and athlete's foot.

3. Detoxification effect: According to experiments, the tea polyphenols in Lapsang Souchong black tea can absorb heavy metals and alkaloids, and precipitate and decompose them. This is very important for modern people whose drinking water and food are polluted by industry. , is a blessing.

4. Effect of producing body fluids and clearing away heat: Drinking black tea in summer can quench thirst and relieve heat because the polyphenols, sugars, amino acids, pectin, etc. in the tea react chemically with saliva and stimulate saliva secretion. , causing the mouth to feel moist and cool; at the same time, caffeine controls the temperature center of the hypothalamus and regulates body temperature. It also stimulates the kidneys to promote the excretion of heat and dirt and maintain the physiological balance in the body.

5. Antioxidant and anti-aging effects: Research results show that the antioxidants in green tea and black tea can completely destroy the propagation paths of chemical substances in cancer cells.

6. Nourish the stomach and protect the stomach: Black tea not only does not hurt the stomach, but also nourishes the stomach. Regular drinking of black tea with sugar and milk can reduce inflammation, protect the gastric mucosa, and is also effective in treating ulcers.

7. Anti-cancer effect: It is very popular to say that tea has anti-cancer effects. Researchers from all over the world have also done a lot of exploration on this. However, it is generally believed that the anti-cancer effect of tea is mainly manifested in green tea. aspect, but now there is new progress. Studies have found that black tea, like green tea, also has strong anti-cancer effects.

8. Vasodilator effect: The American medical community also recently conducted a study related to black tea. Studies have found that patients with heart disease can increase vasodilation from 6% to 10% if they drink 4 cups of black tea a day. After being stimulated, the relaxation rate of ordinary people will increase by 13%.