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Progesterone Throws Lifeline to Traumatic Brain Injury Patients

More than 25 years ago neuroscientist Don Stein saw differences in the ways male and female rats, and humans, recovered from stroke and brain injury. He learned the key was progesterone — a hormone present in the brains of both men and women. Now progesterone will be tested over three years in more than 1,100 patients who experience traumatic brain injury — often a life-ending or severely life-changing experience. An early pilot study found the treatment was safe and reduced death and disability. Full story >