It all started in Scotland, when a researcher noticed that rams became irritable, withdrawn and irrational when their testosterone levels plummeted. He coined the term “irritable man syndrome.” Psychotherapist Jed Diamond thought this might apply to human males as well, and analyzed data from six thousand men. He reported his findings in his 1997 book, “Male Menopause”. Dr Diamond found that one half of the men said they were stressed, gloomy, or negative most of the time. A total of forty per cent of the overall survey reported feeling often or always irritable. Many of the subjects who reported that they were feeling negative emotions were also, at the same time, experiencing hormonal fluctuations-namely a drop in their testosterone level. These men also were experiencing changes in their brain chemistry, increased stress, and a “loss of male identity.”