The Associated Press reports that gunman at the DC Naval Yard attack, Aaron Alexis, “had been treated since August by the Veterans Administration for his mental problems,” which included paranoia, sleep disorder and hearing voices in his head. This could be the latest in a long, gruesome history of mass shootings committed by people likely to be on prescribed psychoactive drugs, which have been known to cause homicidal and suicidal ideation.

This could be a correlative coincidence, but as I explain in an earlier article Mass Shooting and Psychoactive Drugs, this type of crime has only become more prevalent as use of psychoactive drugs has gone up and the overall crime rate has gone down.