False assumption on your part unsupported by fact.
Is There a Link Between Mental Health and Mass Shootings?
The reality is that people with mental illness account for a very small proportion of perpetrators of mass shootings in the U.S., says
Ragy Girgis, MD, associate professor of clinical psychiatry in the Columbia University Department of Psychiatry and the New York State Psychiatric Institute.
In 2021, Dr. Girgis, an expert in severe mental illness, and colleagues from Columbia’s Center of Prevention and Evaluation authored the first report on mass shootings using the Columbia Mass Murder Database (CMMD), which examined the relationship between serious mental illness and mass shootings.
Columbia Psychiatry News spoke with Dr. Girgis about the role of mental illness in mass shootings, the motivations behind mass murder, why the perpetrators of mass violence use guns, and more.
The public tends to link serious mental illnesses, like schizophrenia or psychotic disorders, with violence and mass shootings. But serious mental illness—specifically psychosis—is not a key factor in most mass shootings or other types of mass murder. Approximately 5% of mass shootings are related to severe mental illness. And although a much larger number of mass shootings (about 25%) are associated with non-psychotic psychiatric or neurological illnesses, including depression, and an estimated 23% with substance use, in most cases these conditions are incidental.