Potassium in black tea can enhance the circulation ability of heart blood and reduce the loss and consumption of calcium in human body. Potassium is an essential element in human bones, and drinking black tea often can strengthen bones.

Benefits of drinking black tea: refreshing and promoting blood circulation.

Caffeine contained in black tea can excite, refresh and eliminate fatigue, make the brain awake, restore the ability to concentrate, and enhance memory. Moreover, the exciting effect of caffeine can promote blood metabolism, which is good for blood vessels and heart.

Benefits of drinking black tea: clearing away heat and toxic materials.

Drinking black tea in summer can relieve summer heat and thirst, clear away heat and reduce fire, which is helpful to urinate and detoxify; Tea friends, is it beneficial to drink black tea this summer?

The four benefits of drinking black tea are: promoting fluid production to quench thirst.

Tea polyphenols, amino acids, sugars and saliva in black tea react chemically to stimulate the secretion of saliva, thus promoting fluid production and quenching thirst.

Benefits of drinking black tea: diuresis and dampness elimination

Aromatic substances and caffeine in black tea can promote the increase of renal blood flow, increase the filtration frequency of kidney and inhibit the absorption rate of water by kidney; And increased urine output. The increase of urine volume will excrete uric acid, lactic acid and excess salt harmful to the body in time, thus avoiding the occurrence of heart disease and renal edema.

The disadvantages of drinking black tea are: excitement, bad new tea, hyperacidity, nausea, inability to sleep and so on.

One of the disadvantages of drinking black tea: excitement

Black tea is good for refreshing, but not everyone can drink it. Caffeine may lead to arrhythmia and even death if people with heart disease drink it.

The second disadvantage of drinking black tea: new tea is not good.

People may think that new black tea may be better than fermented black tea, but this is not the case. The newer the black tea, the worse it is, because there are too many substances in the unfermented tea that have not yet begun to oxidize, although it does not do much harm to the human body; But it is a great harm to people with gastrointestinal diseases. Substances that are not oxidized will stimulate the gastric mucosa, making people with stomachache more likely to cause gastrointestinal diseases. So it is best to drink new tea for half a month.

Disadvantages of drinking black tea: hyperacidity and nausea.

Friends who are used to drinking tea know that drinking tea on an empty stomach can make people feel queasy, but drinking too much black tea after meals can also make people hungry easily. Stomach acid reflux is sick, because black tea scraped off the fat in the body, making you feel empty and weak, so stomach acid reflux will feel sick. Black tea hurts the stomach and should not be drunk too much.

The fourth disadvantage of drinking black tea: I can't sleep.

If the neurasthenia drinks black tea at night, the caffeine in the tea may give you a headache or make you toss and turn all night.

Everything has two sides, one is good and the other is bad. Although black tea is good, it is not advisable to drink more. Another reminder: pregnant women can't drink black tea. Drinking too much black tea can lead to miscarriage.