Associations Between Heavy Episodic Drinking and Perceived Social Isolation in U.S. Young Adults by Sexual Orientation

Heavy episodic drinking (HED) is prevalent in young adulthood, yet its relationship with psychosocial well-being remains complex. This study examines the association between HED and perceived social isolation among young adults and tests whether this relationship varies by sexual orientation. Using pooled, nationally representative data from the 2022 and 2024 Health Information National Trends Survey (HINTS), this study analyzed adults aged 18–29 (N = 723). Perceived social isolation was measured using the PROMIS Social Isolation Short Form. Weighted multivariable linear regression models assessed interactions between sexual orientation and HED occasions (0 vs. 1+), adjusting for sociodemographic variables and psychological distress. 45.5% reported HED. Lesbian/gay (B = 5.62, SE = 0.58, p < 0.001) and bisexual (B = 1.66, SE = 0.34, p < 0.001) young adults reported higher isolation than straight peers; HED was inversely associated with isolation (B = −1.71, SE = 0.20, p < 0.001). A significant interaction indicated that among lesbian/gay young adults, heavy drinking was associated with lower perceived isolation (B = −5.77, SE = 0.98, p < 0.001). Interventions should account for the social meanings of alcohol use to avoid unintentionally increasing isolation among sexual minoritized populations.