Tea polyphenols in tea can inhibit the production of free radicals, slow down human aging and prevent cancer. Catechin helps to lose weight, reduce blood fat and resist bacteria. Caffeine can stimulate the central nervous system and improve people's alertness, attention and reaction ability.
However, it should be noted that caffeine, theophylline and other substances in tea also have a certain stimulating effect, and excessive drinking will affect people's sleep and nervous system. In addition, the quality and processing methods of tea are different, and its content and quality will be different, thus affecting its health.
Generally speaking, moderate drinking tea is good for health, but it is not omnipotent and not suitable for everyone. It is recommended to drink reasonably under the guidance of a doctor.