1. diuretic effect
The caffeine and aromatic substances in black tea combined effects, to increase in renal blood flow and improve the glomerular filtration rate, renal microvascular expansion, and inhibits tubular reabsorption of water, then bring urine volume increased. This is conducive to remove the body of lactic acid, uric acid (and gout), excessive salt (with hypertension), hazardous materials, as well as ease the swelling caused by heart disease or nephritis.
2. inflammatory sterilization effect
Black tea contains polyphenols have anti-inflammatory effects, and then experimental results reveal that catechins can be combined with the single-cell bacteria, the protein coagulation precipitation, to inhibition and eliminate pathogens.
3. detoxifying effect
According to experimental results show that tea polyphenols in black tea can absorb heavy metals and precipitated decomposition.
4. refreshing and eliminate fatigue effects
Through medical experiments found that the caffeine in black tea can stimulate the cerebral cortex to excitement the nerve center of , bring refreshing, concentrated thinking ability, and thus make even more sensitive reaction of thinking, memory enhancement; It is also on the vascular system and heart with a excitatory effects, strengthening heartbeat, thus speeding up the blood circulation to facilitate metabolism. At the same time to promote sweating and urination, which speed up the excretion of lactic acid (the substance of the muscles feel tired), and other body of old waste material, to eliminate the effects of fatigue.
5. clearing away heat effect
In the summer, thirst quenching and Relieves summer heat drink black tea, because tea polyphenols, sugars, amino acids, pectin and other chemical reaction with the saliva, and stimulate saliva secretion, leading to mouth feel moist and cool feeling generated ; while caffeine regulates body temperature, it also stimulates the kidneys to promote excretion of heat and dirt to maintain the body’s physiological balance.
In addition, black tea also has anti dental caries, stomach and help digest slow aging, lower blood sugar, blood pressure, blood fat, anti-cancer, anti-radiation effects.