- Join Free or Log In?
- mobile version
- My Account
- help center
- Site Map
Many people drink black tea for alertness and energy. There is good scientific evidence to show this works. Black tea contains caffeine. It also contains a little bit of a stimulating substance called theophylline. Both can speed up your heart rate and make you feel more alert.
Black tea is also full of healthy substances called polyphenols. Polyphenols are antioxidants that can help protect your cells from DNA damage.
Some scientists think that specific antioxidants in tea, including polyphenols and catechins, may help prevent some types of cancer. For example, some research shows that women who regularly drink black tea have a much lower risk of ovarian cancer than women who do not.
But more research is needed. So far, research has shown that black tea does not lower the risk of breast, stomach, or colorectal cancer.
Increasing evidence hints that the antioxidants in black tea may reduce atherosclerosis (clogged arteries), especially in women. It may also help lower the risk of heart attack and cardiovascular disease.