Tea can play a role in health preservation, primarily because tea leaves contain the component tea polyphenols. National standards for tea beverages also consider tea polyphenol content as one of the key indicators. Each kilogram of tea beverage must contain more than 300 milligrams of tea polyphenols.

Tea beverages, however, are not equivalent to brewed tea. Brewed tea contains many times more tea polyphenols than tea beverages. The key to tea's health benefits lies in tea polyphenols, which are not only a crucial factor for health but also one of the main elements influencing the color, aroma, and taste of tea.

Tea polyphenols can detoxify and resist radiation. Once they enter the human body, they effectively prevent radioactive substances from penetrating the bone marrow. Medical experts refer to them as the "nemesis of radiation." Moreover, tea polyphenols play significant roles in anti-aging and suppressing cardiovascular diseases.

Tea beverages are not equivalent to brewed tea. Excessive consumption may not be beneficial and could even cause harm.