You're better off buying it from an Asian/Chinese grocery store. I've never heard of caf or de-caf green tea, but we only buy ours from the local Chinese grocer. We do have different types such as short leaved or long leaved. We prefer the long leave, because it has a better flavor. We just don't trust the ones in the American grocery stores, especially the brand name ones. The Japanese green tea is the best tasting, but it is also the hardest to get.
both Cafinated and decaf will have the anti-oxidants that make it so powerful and beneficial, however, if you're looking for the metabolic boost that it offers you should go with cafinated, as it would take twice the amount of the decaf to get this effect (and you need to drink between 4 and 7 cups a day to get the boost from the cafinated variety).
A note of caution: If you are worried about fluoride levels, or if you are on medication for thyroid disease then you should not drink green tea, or ANY tea.
A foolish consistency is the hobgoblin of little minds.
i have a question.ive been noticing bruises on my legs for the past couple of weeks and i don't know where they come from and i have been drinking green tea every morning for a few months now, but ive heard that it can cause brusing??? is this true?? im really worried