Many people drink tea daily and many societies include tea as an integral part of their traditions across the globe. Although teas were first consumed in India and China, they have now become popular all over the world. All types of tea, such as green, black, and oolong, come from the Camellia sinensis plant; however, the way in which the tea is made varies depending on the type. Green tea has been recognized for its potential health benefits. Doctors in India and China have used tea as an astringent, stimulant, and diuretic.