Tea is a power food, if a recent piece - 10 Foods for Better Health - posted at the Food Network's Web site is to be believed.
What's a power food? Don't feel bad. I didn't know either and the article doesn't give a hard and fast definition. But the top nine power foods, in addition to tea, are berries, citrus, vegetables, whole grains, salmon, legumes, nuts and seeds, lean proteins, and olive oil.