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 ...

Caffeine is almost ubiquitous in everyday life. It is found in the typical morning cup of coffee, in black tea, in cola, in ...

The short answer is yes, white tea does contain caffeine, but the amount can vary depending on factors like the specific type ...

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 ...

“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 ...