Posted by jauggy on November 24, 2008, at 21:02:59
In reply to Re: Caffeine plus reduction of cortisol, posted by jauggy on November 17, 2008, at 2:38:52
> @Nolvas:
> I read an article talking about the effects of tea - which has both caffeine and theanine. Based on the study, cortisol levels lowered faster after stressful events for the tea drinkers versus placebo. Its strange, since you'd expect the caffeine in the tea to offset the effects of the theanine.
> http://www.medicalnewstoday.com/articles/53353.php
>
>I've just realised that the study I posted was extremely flawed. Their control group was given a caffeinated drink - so even though the tea drinkers recordered lower cortisol than the placebo group, it doesn't mean that black tea can reduce cortisol. The conclusion you can draw is that it is just better than plain caffeine. The study should have had a control group that is given plain water, and compare the tea drinkers to that group.
poster:jauggy
thread:863311
URL: http://www.dr-bob.org/babble/alter/20081006/msgs/865102.html