What are the advantages and disadvantages of drinking black tea? Will there be iron deficiency?

Black tea is a very common tea, which contains many nutrients, such as carotene, vitamin A, calcium, phosphorus, magnesium, potassium and glutamic acid, so many people usually drink black tea. For the average person, drinking black tea has certain benefits, but not everyone is suitable, so everyone should choose according to their own situation when drinking tea. Let me introduce the advantages and disadvantages of drinking black tea to you.

The benefits of drinking black tea:

1, diuretic: black tea contains caffeine and aromatic substances. Under the combined action, it can increase renal blood flow, thereby increasing glomerular filtration rate and expanding renal microvessels. At the same time, it can also inhibit the reabsorption of water by renal tubules, which is beneficial to the increase of urine volume. Therefore, drinking black tea helps to eliminate lactic acid, uric acid and excessive salts and harmful substances in the body. In addition, due to its diuretic effect, it can also relieve edema caused by heart disease or nephritis.

2, anti-inflammatory sterilization: black tea contains polyphenols with anti-inflammatory effect. In addition, the catechin contained in it can combine with unicellular bacteria, make protein coagulate and precipitate, and play a role in inhibiting and eliminating pathogenic bacteria. Therefore, drinking black tea is very beneficial for people suffering from bacterial diseases and food poisoning.

3. Detoxification: The tea leaves contained in black tea can adsorb heavy metals and alkaloids, and at the same time make them precipitate and decompose. Therefore, for modern people whose drinking water and food are polluted by industry, drinking black tea can play a detoxification role.

4. Refreshing and relieving fatigue: Many people know that drinking tea can refresh themselves, among which black tea has the function of refreshing and relieving fatigue, because the caffeine contained in black tea can stimulate the cerebral cortex, thus exciting the nerve center, so it can play a refreshing role and make the thinking reaction more acute. At the same time, it can stimulate the vascular system and heart, strengthen the heartbeat, thus speeding up blood circulation, benefiting metabolism, and promoting sweating and diuresis. Therefore, this two-pronged approach can accelerate the excretion of old waste materials such as lactic acid in the body and achieve the effect of eliminating fatigue.

The disadvantages of drinking black tea:

1, for patients with stones and tumors, it is not suitable for drinking black tea, which is not good for their condition and should be avoided.

2, people with anemia or mental weakness and insomnia, drinking black tea is also unfavorable, because black tea has a refreshing effect, which will aggravate the symptoms of insomnia.

3, people with stomach heat drinking black tea will aggravate the symptoms of stomach heat, because black tea is warm tea, which has a warming effect. Therefore, except people with stomach heat, people with lung heat, stomach heat and bad breath, people who are prone to acne, or people with red eyes, can't drink black tea, because such people often have strong heat in their bodies, and black tea is hot tea, so people who are angry or afraid of being angry can't drink it well, but will aggravate their anger.

People who take medicine drink black tea, because it will destroy the efficacy, so don't drink black tea during taking medicine.

5. Drinking black tea during menstruation is not good for your health, because drinking black tea during menstruation will consume a lot of iron in your body, and tannic acid in black tea will hinder your body's absorption of iron in food and easily lead to iron deficiency, so don't drink black tea during menstruation.

The above is about the advantages and disadvantages of drinking black tea. It can be seen that black tea has many benefits for some people, but it may have adverse effects on some people. Therefore, when you drink black tea, you must pay attention to your choice according to your own situation to prevent some health problems caused by drinking black tea and adversely affect your health.