'Aside from water, tea is the most commonly consumed beverage in the world.1 In the US, black tea is by far the most popular, but green tea (which accounted for just 15 percent of the tea consumed in America in 20142) may have particularly powerful health benefits.
Regardless of variety, black and green tea (as well as oolong, dark, and white teas) come from the same plant, an evergreen called Camellia sinensis. It is the processing method and degree of oxidization (exposure to oxygen) that creates the different tea types.
While black tea is oxidized, green tea is not oxidized at all after the leaves are harvested. This minimal oxidation may help to keep the beneficial antioxidants in green tea intact.'