Unless the tea has undergone a decaffeination process, all types of green tea contain some amount of caffeine, but the amount of caffeine varies by type. “The caffeine content in green tea may ...

Hey there, tea enthusiasts! If you’re anything like me, you probably look forward to a nice, hot cup of tea to start you ...

L-theanine is also present, in lower concentrations, in black tea. There’s less research on the effects of coffee on stress, but researchers have found moderate to high amounts of caffeine are ...

Since green tea also contains small amounts of caffeine, some people may enjoy it as a substitute for coffee or other caffeinated drinks. Unsweetened brewed green tea contains fewer than 3 ...

“If you do have a slightly slower metabolism, that could mean that even small amounts ... caffeine from your diet. It’s also important to remember that caffeine isn’t just found in tea ...