benefits of black tea

We know that things have two sides, we understand that black tea can promote digestion, anti-inflammatory and antibacterial, fatigue and other effects, but also to see that it may also lead to iron deficiency, may damage the brain and other adverse aspects. The following is a detailed analysis of the benefits and disadvantages of drinking black tea in the end.

The benefits of drinking black tea

Eliminate fatigue

The caffeine contained in black tea can constantly stimulate the brain's nerve center system to maintain a state of excitement, and constantly strengthen the brain's blood circulation to maintain such a state of excitement, which can promote the body's metabolism, but also help the body sweat, to help eliminate fatigue effect.

Clearing heat and eliminating summer heat

In the hot summer, drinking black tea is able to help quench thirst, because black tea contains sugars, tea polyphenols and other substances, can constantly stimulate the mouth to secrete saliva to quench thirst, and can produce a sense of refreshment. In addition, caffeine can also help the inferior optic thalamus to regulate body temperature, in the hot summer can effectively eliminate the heat.

Diuretic

The caffeine and aromatic substances contained in black tea can help increase the blood circulation of the kidneys, and the increase of blood flow in the kidneys can continuously expand the microvasculature of the kidneys and inhibit the reabsorption of water by the renal tubules. This way the daily urine output can be increased. Drinking black tea to help diuretic at the same time can also help the body detoxification and prevent body edema.

Detoxification and antiseptic

The polyphenols contained in black tea have a very good effect on the eye, and the polyphenols contained in black tea also have an adsorption function, for the body contains heavy metals, alkaloids and other substances can be effectively adsorbed and decomposed by starch, which can effectively ensure the health of the human body.

Strengthens bones

Drinking black tea regularly can help strengthen bones because the polyphenols in black tea also have the ability to inhibit the vitality of substances that destroy bone cells, which can continuously help strengthen bones. This has a good effect on the prevention and control of osteoporosis.

Prevents Bad Breath

Black tea contains an aroma, and regular consumption of black tea can help eliminate bad breath. And black tea also has a good antibacterial ability, often drink black tea or the habit of gargling with black tea, not only to cleanse the breath can also help prevent the growth of bacteria in the mouth.

Prevention of myocardial infarction

Black tea in the fermentation process will produce theaflavin, theaflavin and other substances, can well promote the body to produce insulin, thus helping to control the stability of blood sugar. Especially when lemon is added to black tea, it can also help prevent the occurrence of diabetes, osteoporosis and other diseases.

The bad effects of drinking black tea

Faster hunger

Although drinking a cup of black tea at breakfast can help refresh and welcome the new day with a full state of mind, but this full state is temporary, the caffeine in black tea can make people feel excited for a short period of time, but after the adrenaline is stimulated to fall, the body will feel exhausted and hunger. People who live a fast-paced life should not drink black tea in the morning.

Damage to the brain

Often drink black tea is easy to cause fluoride, aluminum poisoning phenomenon, damage to bones, teeth, but also easy to make the brain tissue in charge of memory of the hippocampus damage, adolescents often drink black tea may affect physical development, memory loss, the elderly often drink is easy to cause senile dementia.

Affects sleep

Black tea contains caffeine substances, will lead to excitement in the central nervous system, if you drink black tea before bed, it is easy to affect sleep. Especially people who are easily emotional on weekdays, drinking black tea caffeine excitement effect is likely to lead to neurasthenia.

Iron deficiency in the body

If adolescents like to drink black tea, black tea belongs to the fermented tea, containing the internal phenols, tannins flavanones, can combine with the iron in food, preventing the body from absorbing iron. For teenagers who urgently need to replenish iron, pregnant women, anemic patients, black tea should not be consumed.

How to drink black tea well

It is best to use boiling water to brew black tea, which is conducive to promoting the effective dissolution of flavonoids in black tea, not only to make the taste and aroma more intense, but also to better play the health function. Steeping time of tea is generally 5 minutes best, can be appropriate longer. Kung Fu black tea can be brewed 3 times to 4 times, while black tea can be brewed 1 time to 2 times.

When is a good time to drink black tea

Black tea is better to drink after dinner from 6:00 to 7:00, which is good for lowering blood lipids after meals to help digestion, while the caffeine content of black tea is lower than other teas, which has a small impact on sleep. Do not drink tea after 8 p.m. to prevent the quality of sleep.