Associations Between Sexual Orientation Dimensions and Cardiometabolic Diseases: Data From the National Epidemiologic Survey on Alcohol and Related Conditions-III (NESARC-III).

Objective: Sexual orientation can be measured across identity, attraction, and behavior. Sexual minorities are at increased risk of cardiovascular disease (CVD) and diabetes; however, it is not known whether cardiometabolic disease risk varies across these dimensions.

Methods: We analyzed cross-sectional data from 36,309 adults who participated in the National Epidemiologic Survey on Alcohol and Related Conditions-III (NESARC-III; 2012-2013). Participants were categorized as heterosexual (reference), lesbian/gay, or bisexual across identity, attraction, and behavior using structured clinical interview data. Prevalent CVD (myocardial infarction, stroke, angina, or arteriosclerosis) and diabetes were assessed by self-report.

Results: Demographics (age, sex, race/ethnicity, education, and income) adjusted logistic regression models revealed bisexual behavior (i.e., people reporting sexual activity with both man- and woman-identifying individuals), but not lesbian/gay behavior (i.e., people reporting sexual activity exclusively with same-sex individuals), was associated with an increased odds of prevalent CVD (OR = 1.44, 95% CI = 1.08-1.91, p = .013) and prevalent diabetes (OR = 1.39, 95% CI = 1.09-1.77, p = .007). Contrastingly, sexual minority identity (i.e., self-concept) and attraction (i.e., one's sexual/romantic feelings) were not associated with prevalent CVD or diabetes.

Conclusions: Our results in a nationally representative sample indicate that the sexual orientation dimension of behavior is linked with prevalent CVD and diabetes. This finding suggests that assessing multiple sexual orientation dimensions may aid in identifying sexual minority subgroups in greatest need of cardiometabolic disease prevention efforts. Although mechanisms such as stigma and minority stress have been proposed, future studies are required to elucidate mechanisms underlying the bisexual behavior-cardiometabolic disease relationship.