Black tea is a tea that is completely fermented and new ingredients such as theaflavins and theobromine are produced during the fermentation process.

We will introduce you to the efficacy and effects of black tea.

The efficacy and function of black tea.

1. Refreshing and clearing heat

Summer drinking black tea can quench thirst and eliminate heat, because the tea in polyphenols, carbohydrates, amino acids, and pectin.

And other chemical reactions with the mouth saliva, stimulates saliva secretion, resulting in the mouth feeling moist, and producing a sense of coolness.

At the same time, caffeine controls the temperature center of the inferior optic thalamus, regulating body temperature.

And it also stimulates the kidneys to promote the excretion of heat and dirt, maintaining the physiological balance of the body.

2. Refreshing and anti-fatigue

Medical experiments have found that the caffeine in black tea stimulates the cerebral cortex to excite the nerve centers, leading to refreshment and concentration, which in turn makes the thinking response sharper and memory enhanced.

It also has a stimulating effect on the vascular system and the heart, strengthening the heartbeat and thus speeding up blood circulation to facilitate metabolism.

At the same time, black tea also promotes sweating and diuresis, thus accelerating the excretion of lactic acid (the substance that makes muscles feel fatigued) and other old-waste substances in the body in a two-pronged way, to achieve the effect of eliminating fatigue.

3. Diuretic

The combined effect of caffeine and aromatic substances in black tea increases the blood flow of the kidney, improves the filtration rate of the glomerulus, dilates the renal microvasculature, and inhibits the reabsorption of water by the renal tubules, thus contributing to the increase in urine volume.

This facilitates the elimination of lactic acid, uric acid (related to gout), excessive salt (related to high blood pressure), and harmful substances from the body, as well as easing edema caused by heart disease or nephritis.

4. Anti-inflammatory and antiseptic

The polyphenolic compounds in black tea have anti-inflammatory effects.

And then experiments found that catechins can combine with single-celled bacteria, causing protein coagulation and precipitation, thereby inhibiting and eliminating pathogenic bacteria.

Therefore, for bacteriophage dysentery and food poisoning patients drinking black tea is quite beneficial, folk people also commonly used strong tea-coated wounds, bedsores, and athlete's feet.

5. Prevention of blood clots

Many people like to drink black tea, but many people do not know that drinking black tea also has the effect of lowering blood pressure, drinking black tea can improve the function of the heart and other parts of the vascular endothelium.

In addition, tea pigments can also improve microcirculation, protect the normal supply of blood tissue and oxygen, inhibit platelet adhesion and coagulation, anti-coagulation, anti-thrombotic, anti-atherosclerosis, and cardiovascular protection, prevention, and control thrombosis.　

When people drink green tea on an empty stomach.

The stomach will feel uncomfortable, while black tea due to fermentation, has polyphenols into more.

Therefore, its stimulation of the human gastrointestinal less, very mild, can effectively protect the stomach organs, and will not produce any damage to them.

Black tea with trace elements can promote human digestion.　

Black tea is warm and is not suitable for people who have a body on fire.

Long-term consumption of black tea will become a weak and cold stomach to be no longer as strong as before, and sometimes the kidneys will be cold and painful.

Therefore, it is not suitable for long-term drinking.

Otherwise, it will produce palpitations, and cold stomach symptoms, drink more black tea the health risks, these taboos must know.