There is no evidence to show that caffeine in tea is harmful. In fact, most studies point to the many health benefits of tea caffeine, which is different than coffee.
If you're worried about the caffeine found in our black, green and white teas, you might be interested to read more about how, for most people, the caffeine in tea doesn't affect them as negatively as the caffeine in coffee. This is because tea contains an amino acid called l-theanine, which calms and focuses the mind, helping to counteract any of the "jitters" or crashes you might associate with coffee.
Caffeine in tea is also bound to catechins to form a larger molecule that takes more time for your body to break down and digest, therefore creating a time-released effect of caffeine that's unique to tea. Unless you have a medical reason for avoiding caffeine, we suggest you try starting your day with just one cup of black or Oolong tea and seeing how you feel -- especially if you're trying to work on your gut health.