Caffeine: In moderate quantities, stimulates the central nervous system and promotes blood circulation. It stimulates the process of elimination and acts as a diuretic promoting better kidney function.

Polyphenols: May act as an anticancer agent in that they have an antimutant factor which helps cell DNA to reproduce itself accurately rather than in mutated forms which may lead to cancer.

Essential Oils: Sometimes called aromatic oil/volatiles) Forms naturally in tea leaves as they grow. They account for the aroma of the beverage. These substances also aid digestion and help emulsify at. Green Tea has more essential oils than the more highly processed black tea.