Since ancient times tea has been considered a precious commodity and major influence on trade routes and expeditions. Tea is more than a delicious pick-me-up. Both green and black teas contain catechins. Although more concentrated in green tea, these catechins promote a healthy brain as they protect against a buildup of amyloid deposits which are implicated in age related neurodegenerative diseases such as Alzheimer's. Fluoride rich, tea offers protection against dental cavities. ...