Cigarette smokers are more likely to commit suicide than people who don’t smoke, studies have shown. This reality has been attributed to the fact that people with psychiatric disorders, who have higher suicide rates, also tend to smoke. But new research at Washington University School of Medicine in St. Louis finds that smoking itself may increase suicide risk and that policies to limit smoking reduce suicide rates.
In a study published online in the journal Nicotine & Tobacco Research, a team led by Richard A. Grucza, PhD, reports that suicide rates declined up to 15 percent, relative to the national average, in states that implemented higher taxes on cigarettes and stricter policies to limit smoking in public places.
“Our analysis showed that each dollar increase in cigarette taxes was associated with a 10 percent decrease in suicide risk,” said Grucza, associate professor of psychiatry. “Indoor smoking bans also were associated with risk reductions.”