1, black tea belongs to fermented tea, with rich fragrance and sweet taste. Its sweetness tends to warm and nourish the stomach, which can replenish yang and replenish qi, nourish and store yang, enhance the cold resistance of human body, and also help digestion and get rid of boredom. Domestic and foreign research reports show that black tea is rich in "theaflavins", which is a powerful lipid-lowering substance and can prevent atherosclerosis, thus reducing the risk of atherosclerosis.

2, taboos for drinking black tea: insomnia, strong stomach fire, aphtha, stones, tumors are contraindicated. Some ingredients in black tea can detoxify, so be careful when taking medicine.

Because black tea may increase the burden on the heart and kidneys, pregnant women and patients with renal insufficiency and cardiac insufficiency should also pay attention.