Commentary

A street medicine view of tobacco use in patients with schizophrenia

Current Psychiatry. 2023 October;22(10):e3-e5 | doi: 10.12788/cp.0404

References

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Treatment of schizophrenia involves multimodal management of a patient’s life, including reducing maladaptive habits that are harmful to health. Chronic smoking in patients with schizophrenia is associated not only with atherosclerosis and cardiovascular disease, but also with poor neurologic functioning, such as significant impairment in attention, working memory, learning, executive function, reasoning, problem-solving and speed of processing.¹⁴ One study found that in patients with schizophrenia, smoking increased the 20-year cardiovascular mortality risk by 86%.¹⁵

Despite challenges to abstinence, smoking cessation should be discussed with these patients, especially given the high prevalence of smoking among this vulnerable population. Bupropion and varenicline have been studied in the context of smoking cessation among patients with schizophrenia. Data on varenicline are mixed. Smokers with schizophrenia who received bupropion showed higher rates of abstinence from smoking compared to those who received placebo.¹⁶

As part of the biopsychosocial model of clinical care, sociodemographic factors must be considered in assessing the relationship between tobacco use and schizophrenia, because a large proportion of patients diagnosed with schizophrenia are members of underrepresented minority groups.¹⁷ A PubMed database search using keywords “African American” or “Black,” “tobacco,” and “schizophrenia” located only 12 studies, most of which lacked relevance to this question. Han et al¹⁸ is 1 of the few studies to investigate sociodemographic factors as they relate to tobacco use among adults with psychoses. Social determinants of health and other confounding variables also need defining to truly distinguish causation from correlation, especially regarding tobacco use and its association with other health risk behaviors.¹⁹

Without the street medicine component of the medical school training I received, the pattern of smoking among patients with schizophrenia may have remained invisible or insignificant to me, as tobacco use is not permitted in the inpatient and outpatient academic settings. This experience not only raised insightful questions, but also emphasized the clinical value of seeing patients within their living environment.