Our tea-drinking friends in the U.K. have recently discovered tea has a very significant stress reducing quality. According to researchers from the University College London, men who drank black tea four times per day for six weeks had significantly lower levels of the stress hormone cortisol as compared with a control group. In the study of 75 men, half consumed either a fruit-flavored caffeinated tea mixture made up of the usual constituents of a cup of black tea, or, a caffeinated substitute identical in taste but without the active tea ingredients. At the end of the six weeks the men were given a series of stress inducing tests to perform. Fifty minutes after the tests, cortisol levels had fallen an average of 47 percent among the tea drinkers, compared to 27 percent in the fake tea group.