It's probably already in your cupboard.When your energy levels are low, you might intuitively brew a cup of joe—but tea can ...

Green tea is your go-to if you're looking for a milder caffeine kick. With about 29 mg of caffeine per 8-ounce serving, it provides a gentle lift. Green tea also contains L-theanine, an amino acid ...

A new study has unveiled the intricate genetic mechanisms that regulate theanine accumulation in tea plants—a key determinant of tea quality. Scientists have identified CsMYB73, a crucial ...

However, habitual black tea consumption did not prevent cavities. L-theanine is a compound found naturally in black tea that may improve attention and reduce stress. In healthy adults, taking 200 ...

L-theanine is an amino acid found in tea. Although L-theanine is associated ... L-theanine is a water-soluble amino acid found in green and black teas. It is also available as a supplement.

In today’s fast-paced world, where stress and anxiety have become common concerns, finding simple and effective ways to ...

Black tea contains caffeine and L-theanine, which may boost alertness and focus, too. Black tea is rich in polyphenols, which can promote the growth of beneficial bacteria and lower the chances of ...

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 ...