High levels of caffeine intake have been associated ... which falls on the acidic side of the scale. Black tea and green tea typically have a pH level between 6.0 and 7.0, which is closer to ...

Caffeine is safe in moderate amounts, but excessive intake, especially from supplements or in children, can pose serious ...

There’s evidence the effects of caffeine in a cup of tea are enhanced by an amino acid it contains, called L-theanine, if it is drunk regularly. The research finds “L-theanine may interact ...

But tea isn’t just herbs and water. It contains caffeine, a stimulant that affects kids differently than adults. While adults can handle small doses, caffeine in tea can harm a child’s ...

Green tea is caffeine-free. Well ... it has very little to do with any magic properties of the tea. A few small-scale studies have linked an increased metabolic rate to drinking green tea ...

That’s the amount in about one or two cups of brewed coffee or three or four cups of black tea. You may be able to handle more or less caffeine. People can have different reactions to the drug.

A new large-scale study published in the June 2007 issue ... examined the relationship between coffee, tea, caffeine intake, and uric acid levels and found that coffee consumption is associated ...

A large-scale study in the Journal of Alzheimer ... consider scaling back or switching to lower-caffeine alternatives like matcha, green tea or even decaffeinated coffee—which still offers ...

suggesting that compounds other than caffeine in tea—like polyphenols and catechins—may play a role in brain development. A widely used cognition assessment scale was used to determine ...

It's grown and prepared in a way that makes it different from regular green tea, with a higher caffeine content. "In the few weeks leading up to harvest, tea plants are covered to avoid direct ...