Many use l-theanine to improve stress disorders, mood and sleep hygiene. Yes. While black tea has less caffeine than coffee, it’s still a caffeinated beverage. Black tea has about 47 milligrams ...

Black tea contains caffeine and an amino acid called L-theanine, which may help improve alertness and focus. L-theanine increases alpha activity in the brain, resulting in relaxation and better focus.

While black tea is by far the most popular type of ... to have worse symptoms than tea drinkers, due to the higher caffeine content, but it depends how much you drink. Pregnant women should ...

Green tea's polyphenol content may also be responsible for its anti-cancer properties." Despite being slightly higher in calories and much higher in caffeine, black tea still offers a host of ...

A recent study from The University of Western Australia suggests that drinking black tea could play a significant role in ...

Over the last several years, there have been many debates about coffee vs. tea and which is better for you. And people ask ...

Whether you’re looking for an afternoon pick-me-up or a cozy sipper on a cool day, Earl Grey tea is a popular choice. This ...