As American parents give their kids growth hormones to make them taller, some research suggests that taking medications for attention deficit hyperactivity disorder (ADHD) may be having the opposite effect. As the New York Times reports, the scientists behind the Multimodal Treatment of Attention Deficit Hyperactivity Disorder Study, or MTA Study for short, were not exactly looking for physiological changes in their subjects— a cohort of 579 kids with ADHD, some of whom were given Ritalin, counseling, a mix of the two, or neither. Beginning in 1994, researchers across the country began tracking outcomes of children who were, at the start […]