Tea drinking has been linked with increased immunity. Researchers in Boston found people who drank five to six cups of black tea each day seemed to get a boost in that part of the immune system that acts as a first line of defense against infection.
Researchers found that blood samples taken after people drank tea were able to react against the bacteria fivefold better by making a very important protein called interferon gamma. That should mean you’re going to be more able to fight off diseases because that’s a very important bacteria-fighting and virus- and tumor-fighting molecule.
Another study found that mice who had been genetically engineered to develop prostate cancer, and who drank the equivalent of about six cups of tea a day, did not end up developing tumors.
China has the lowest prostate cancer rate in the world and Japan is also very low, and they drink much more tea.
Another study found that a green tea extract reduced body fat in mice, possibly by inhibiting the absorption of fats and starches,
Drinking green tea may mitigate DNA damage from smoking that could lead to mouth cancer
Researchers are working on developing a cream made up of tea polyphenols which would ward off skin cancer.
Researchers in Boston found that drinking tea improved the function of blood vessels and platelets, and may therefore reduce the risk of heart attack and stroke.