1, benefits of drinking black tea: black tea can help gastrointestinal digestion, promote appetite, diuretic, eliminate edema, and strengthen heart function. The American Heart Association once concluded that black tea is "one of the drinks rich in flavonoids which can eliminate free radicals and have anti-acidification effect, and can reduce the incidence of myocardial infarction". Chinese medicine believes that tea is also divided into cold and heat. For example, green tea is bitter and cold, which is suitable for drinking in summer and used to cool off the heat. Black tea and Pu 'er tea are warm, so they are more suitable for drinking in winter. As for oolong tea and Tieguanyin, they are more neutral.

2, the disadvantages of drinking black tea: people with anemia, mental weakness and insomnia should not drink black tea. Because the refreshing effect of black tea will aggravate their insomnia symptoms. People with stones and tumors should not drink black tea. Lactating women should not drink black tea, because tannic acid in black tea affects the blood circulation of mammary glands, which will inhibit the secretion of milk and affect the quality of lactation.

Extended data:

The newer the new tea, the better. Improper drinking will easily hurt the stomach. Because the new tea has just been picked and stored for a short time, it contains more unoxidized polyphenols, aldehydes and alcohols, which have little impact on healthy people. However, for patients with poor gastrointestinal function, especially those with chronic gastrointestinal inflammation, these substances will stimulate the gastrointestinal mucosa, and people with poor gastrointestinal function are more likely to induce stomach diseases. Therefore, it is not advisable to drink more new tea, and don't drink new tea that has been stored for less than half a month.

People's Network-What are the effects and taboos of black tea? These people are not fit to drink black tea.