Green tea is not naturally caffeine-free. Green tea contains an average of 29 milligrams (mg) of caffeine in an 8-ounce cup, but the amount can vary. Black tea typically has more caffeine at 47 mg ...

rather than caffeine, on cognitive function, 60 study participants were given capsules of catechins derived from decaffeinated green tea for 12 weeks. The researchers found that the incorrect ...

Masala chai Do you find tea relaxes you? If so, this spiced chai drink will appeal Low-caffeine green tea has also beenfound to reduce stress in some people. The researchers put this down to the ...