Growing numbers of children and adolescents are being prescribed multiple psychiatric drugs to take simultaneously, according to a new study in the state of Maryland. The phenomenon is increasing despite warnings that psychotropic drug combinations in young people have not been tested for safety or studied for their impact on the developing brain. The study, published Friday in JAMA Open Network, looked at the prescribing patterns among patients 17 or younger enrolled in Medicaid in Maryland from 2015 to 2020. In this group, there was a 9.5 percent increase in the prevalence of “polypharmacy,” which the study defined as taking...