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Smoking cessation may improve mental health

ST. LOUIS — New research at Washington University School of Medicine in St. Louis found that people who struggle with mood problems or addiction can safely quit smoking and that kicking the habit is associated with improved mental health, the university announced earlier this week. 

“Clinicians tend to treat the depression, alcohol dependence or drug problem first and allow patients to ‘self-medicate’ with cigarettes if necessary,” said lead investigator Patricia Cavazos-Rehg. “The assumption is that psychiatric problems are more challenging to treat and that quitting smoking may interfere with treatment.”

But in the study, Cavazos-Rehg, an assistant professor of psychiatry, found that quitting or significantly cutting back on cigarette smoking was linked to improved mental health outcomes. Quitting altogether or reducing by half the number of cigarettes smoked daily was associated with lower risk for mood disorders like depression, as well as a lower likelihood of alcohol and drug problems.

“We don’t know if their mental health improves first and then they are more motivated to quit smoking, or if quitting smoking leads to an improvement in mental health,” Cavazos-Rehg said. “But either way, our findings show a strong link between quitting and a better psychiatric outlook.”

In addition, she believes the serious health risks associated with smoking make it important for doctors to work with their patients to quit, regardless of other psychiatric problems.

“About half of all smokers die from emphysema, cancer or other problems related to smoking, so we need to remember that as complicated as it can be to treat mental health issues, smoking cigarettes also causes very serious illnesses that can lead to death,” she explained.

The study is published online in the journal Psychological Medicine.

Funding for this research comes from the National Center for Research Resources and the National Institute on Drug Abuse of the National Institutes of Health. The study also was supported by the NIH Roadmap for Medical Research and by the American Cancer Society.

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