Some people say that drinking tea can supplement minerals, make people strong and not easy to suffer from osteoporosis.
It is also said that tea is not conducive to nutrient absorption, which will make people anemia, and caffeine in it will also cause calcium deficiency, so pregnant women, lactating women and menstruating women can't drink it.
Some people say that black tea warms the stomach and Pu 'er tea helps digestion.
Others say that people with poor gastrointestinal digestive function can't drink tea, and caffeine is irritating to the stomach.