When it comes to black tea, everyone must be familiar with it. As one of the common tea leaves in our lives, the efficacy of black tea is also the most easily overlooked. Do you want to know how the black tea you drink every day quietly changes you?

Black tea can enhance human immunity

Mr. Shimamura, a professor at Showa University School of Medicine, said that gargling with black tea can prevent influenza. Professor Shimamura conducted an experiment in which he divided 300 students into two groups: one group gargled with tea twice a day; the other group did not. Five months later, the group of students who rinsed their mouths with tea was essentially immune to the cold virus.

Because black tea contains catechins, this substance is highly effective in enhancing people’s immunity. In addition, it can also help the body’s own immune cells to curb the growth of tumors.

The method of gargling with black tea is very simple: brew black tea with a concentration of 2%-5%, rinse your mouth once every morning and evening, and let the black tea stay in your mouth for about 15 seconds each time. If you persist for a long time, the effect will be significant.

Black tea can resist aging

Regarding the research on black tea, the United States started relatively early. In the past many years, the United States has funded more than 150 research experiments on the ingredients of black tea and green tea. Experiments have shown that the antioxidants contained in tea can help the human body completely destroy the spread of cancer cells. The beneficial ingredients in black tea are especially good for the heart.

People with osteoporosis should drink more black tea

On May 13, 2002, the American Medical Association published a survey of 497 men and 540 women over 10 years, pointing out that people who drink black tea have strong bones, and the polyphenols in black tea (also found in green tea) inhibit the activity of substances that destroy bone cells. Osteoporosis is more obvious in women, so it is recommended that you drink a small cup of black tea every day, or you can pair it with lemon and other fruits to have a synergistic effect.

Black tea makes blood flow smoother

There is also a recent study in the American medical community related to black tea. Studies have found that patients with heart disease who drink 4 cups of black tea a day can increase their vasodilation from 6% to 10%. For ordinary people, their vasodilation will increase by 13% after being stimulated.

Various nutrients, such as a variety of water-soluble vitamins, rich trace elements potassium and manganese, and also contain a flavonoid compound. After brewing black tea, 70% of the potassium can be dissolved in the tea water. Potassium can enhance heart and blood circulation.

Drink black tea regularly and experience more abundantly

Drinking tea can cheer people up when they feel drowsy. I believe this is common sense that most people know. Experiments have shown that black tea is more suitable for relieving fatigue. The caffeine it contains can help people think in various ways and play a refreshing role. Long-term drinking will make people's thinking more agile.

　(Editor: Bonnie)

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