comorbidity of mental illness and drug use - Bing
There were approximately 40,000 gun deaths in U.S. in 2018.
There were approximately 70,000 deaths in U.S. from drug overdose in 2018.
The criteria for mental illness is very broad and may or may not include OCD, anxiety, ADHD and other illnesses not deemed as severe as other mental illnesses that may trigger criminal activity and hospitalization and long term treatment by a mental health specialist.
I don't think anyone, at this point can really say with authority what caused either of these young men to do what they did and what if anything that could have been done to stop it before it happened. I would like to know more about the families of the shooters, the home environment of the shooters. Did they rebel against what they were taught, or did they take on the family values? What made them SO ANGRY? What made them so cold hearted to take so many innocent lives of people they did not know as well as the one family member in the case of the Dayton shooter? I would like to know the "whole story" before I can decide what I think is the primary causes of these events and what if anything we as a government and a society can do to change things.