Is it better to drink black tea or green tea often?

Let's talk about the benefits of black tea first: black tea is fermented and baked. During the fermentation process, tea leaves turn into red oxides and become black tea under the action of oxidase. Black tea is mild in nature and mellow in taste. Besides containing a variety of water-soluble vitamins, it is also rich in trace element potassium. When brewing, 70% potassium can be dissolved in tea. Potassium can enhance blood circulation in the heart and reduce calcium consumption in the body. Because manganese contained in black tea is one of the indispensable elements of bone structure, drinking black tea often is also beneficial to bone strength. According to foreign reports, drinking black tea often has the effect of preventing and treating influenza, stroke and skin cancer. Studies have shown that black tea contains flavonoids, which are similar to antioxidants and can prevent stroke and heart disease. A recent study in the United States shows that people who drink a cup of black tea every day have a lower risk of heart disease than those who don't drink tea. Next, talk about the benefits of green tea: the antioxidants contained in green tea help to fight aging. Because in the process of human metabolism, if it is over-oxidized, it will produce a lot of free radicals, which are easy to age and cause cell damage. The occurrence of some tumors is also related to excessive free radicals. Can improve indigestion. Chinese medicine used green tea to treat diseases, which has a history of at least thousands of years and has a certain curative effect. Recent research reports show that green tea can help improve indigestion and has antibacterial effects, such as acute diarrhea caused by bacteria. You can drink a little green tea to relieve your illness. Green tea is suitable for people of any age. It is also used to treat acute infectious hepatitis and acute and chronic gastroenteritis, and is also helpful for the recovery of liver function. Green tea is suitable for people of all ages to drink, because it is non-toxic, and also has the functions of diuresis, expectorant, detoxification, clearing away heat, calming the nerves and relieving fatigue. Now there is also a saying that green tea has a certain effect on weight loss, but the exact effect needs further clinical verification. However, because green tea tastes bitter and cold, people with cold constitution are not suitable for drinking more. There are patients with gastric ulcer, because green tea can promote gastric acid secretion, which is not good for patients with gastric ulcer. In addition, green tea contains caffeine, so it has an exciting effect. People who are allergic to tea can cause insomnia, palpitation, headache and tinnitus. It should be green tea. Pu 'er tea is better than green tea.