Increased Cardiovascular Disease Risk in Veterans With Mental Illness

Abstract

Background: Although previous studies have demonstrated an association between various mental illnesses and cardio-cerebrovascular disease (CVD) risk, few have compared the strength of association between different mental illnesses and CVD risk. Methods and Results: We assessed the association of psychiatric diagnoses (psychosis, bipolar disorder, depression, anxiety, and posttraumatic stress disorder) with major CVD outcomes (CVD events and CVD mortality) over 5 years, using a national primary prevention cohort of military veterans receiving care in the Department of Veterans Affairs. Data were linked from the Department of Veterans Affairs, Centers for Medicare and Medicaid Services, and Centers for Disease Control and Prevention National Death Index databases. We used multiple logistic regression to examine how the presence of a psychiatric diagnosis at baseline (2005–2009) was associated with CVD outcomes over the next 5 years (January 1, 2010, to December 31, 2014) stratified by sex, adjusting for other psychiatric diagnoses, as well as age, race, conventional CVD risk factors as calculated by the Veterans Affairs Risk Score-CVD, and antipsychotic and anticonvulsant/mood stabilizer medication prescriptions. Approximately 1.52 million men and over 94 000 women met our inclusion criteria. In the fully adjusted model, among men, we found that depression, psychosis, and bipolar disorder were predictive of both CVD events and CVD mortality, with psychosis having the largest effect size (eg, adjusted odds ratio, 1.48; CI, 1.41–1.56; P <0.001 for psychosis and CVD mortality). Among women, only psychosis and bipolar disorder were predictive of both CVD events and CVD mortality, again with psychosis having the largest effect size (eg, adjusted odds ratio, 1.97; CI, 1.52–2.57; P <0.001 for psychosis and CVD mortality). Anxiety was associated with only CVD mortality in men, and depression was associated with only CVD events in women. Conclusions: Consistent with the hypothesis that chronic stress leads to greater CVD risk, multiple mental illnesses were associated with an increased risk of CVD outcomes, with more severe mental illnesses (eg, primary psychotic disorders) having the largest effect sizes even after controlling for other psychiatric diagnoses, conventional CVD risk factors, and psychotropic medication use.