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Black tea can help gastrointestinal digestion, promote appetite, diuretic, eliminate edema, and strengthen the heart function. Flavonoids in black tea can eliminate radicals, have anti-acidification effect and reduce the incidence of myocardial infarction.
(1) Refreshing and exhausting
Theine in black tea stimulates the nerve center by stimulating the cerebral cortex, promotes refreshment and concentration of thinking, thus making the thinking response more acute and enhancing memory. It also has exciting effects on the vascular system and the heart, strengthening the heart beat, thus speeding up the blood circulation to facilitate metabolism and achieve the effect of eliminating fatigue.
(2) Promoting fluid metabolism and clearing away heat
Drinking black tea in summer can relieve thirst and heat, produce chemical reaction between tea and saliva, stimulate salivary secretion, cause the mouth to feel moist and cool; at the same time, theine controls the hypothalamus temperature center, regulates body temperature, stimulates the kidney to promote the excretion of heat and dirt, and maintains the physiological balance of the body.
The combined action of theine and aromatic substances in black tea contributes to the increase of urine volume. This is conducive to the elimination of harmful substances in the body, and ease the edema caused by heart disease or nephritis.
(4) Anti-inflammation and bactericidal
Polyphenolic compounds in black tea have anti-inflammatory effects.
Tea polybasic in black tea can adsorb heavy metals and alkaloids and precipitate and decompose.
(6) Strong bones
Polyphenols in black tea inhibit the activity of substances that destroy bone cells. In order to prevent and cure common osteoporosis, it is recommended to take a small cup of black tea every day for several years. If lemon is added to black tea, it will strengthen the skeleton, and the effect will be stronger. In black tea, a variety of fruits can also be added, which can play a synergistic role.
Antioxidants in black tea can completely destroy the chemical transmission pathway in cancer cells, especially beneficial to the heart.
(8) Nursing stomach and protecting stomach
Black tea is fermented and baked, not only does not hurt the stomach, but can nourish the stomach. Frequently drinking black tea with sugar and milk can reduce inflammation and protect gastric mucosa, and has certain effect on ulcer treatment.
The study found that patients with heart disease drank four cups of black tea a day, and vasodilation increased from 6% to 10%.