The majority of evidence comes from studies done on lab animals. The effect on people is unclear. Although much remains to be learned about the health benefits of tea, it is considered a good choice for at least some of the 6 to 8 cups or glasses of fluids recommended daily. The best teas are those brewed from loose leaves or tea bags of black, green or red tea, as they have the most antioxidant power. Allow your tea to steep for three to five minutes to allow the maximum amount of antioxidants to be released.
Iced teas can provide as much antioxidant power as hot teas.
Keep them covered and refrigerated. Bottled teas often have a lower antioxidant level because they contain mostly water and sugar. Some people think that milk lowers tea's anti-oxidant power because it binds to polyphenols and inactivates them. This has not been proven, however, so go ahead and add some milk if you like. You'll also increase your calcium intake.