Can oolong tea enhance immunity?
Generally speaking, oolong tea can enhance immunity, but excessive consumption should be avoided. The detailed explanation is as follows:

Oolong tea contains various beneficial components, including tea polyphenols, tea polysaccharides, zinc, and other nutrients. These substances can slow cellular oxidative damage and protect cells from free radical attacks, thereby maintaining normal immune system function. Additionally, vitamin C and amino acids in oolong tea also help improve the body's immunity. Therefore, under conditions of moderate consumption and suitable individual constitution, oolong tea can indeed enhance immunity.
Although oolong tea may help enhance immunity to some extent, excessive consumption may produce the opposite effect. Oolong tea contains caffeine, and excessive intake may lead to insomnia, palpitations, and other issues, which can negatively affect health and immune function. Therefore, it is recommended to consume oolong tea in moderation and avoid excessive intake.
It is also recommended to engage in moderate daily exercise, such as jogging, swimming, or cycling, to promote blood circulation, enhance immunity, and reduce the risk of illness.