Single-use, co-use, and polysubstance use of alcohol, tobacco, and cannabis in sexual minority and heterosexual females.

BACKGROUND AND OBJECTIVE: Alcohol, tobacco, and cannabis use are more prevalent in sexual minority females than heterosexual females, and their use is associated with adverse consequences. Identifying disparities in substance use patterns by sexual identity may inform interventions targeting this vulnerable group. This study examined differences between heterosexual and sexual minority females on patterns of past 30-day tobacco, alcohol, and cannabis use. METHODS: N = 3020 females (18.8% sexual minority) completed an online survey (September 2020-October 2021) that queried about past 30-day tobacco/nicotine (cigarettes, e-cigarettes, large cigar/LCCs, and other products), alcohol, and cannabis use. Participants were classified into one of eight patterns: no use, tobacco/nicotine-only, alcohol-only, cannabis-only, alcohol and tobacco/nicotine, tobacco/nicotine and cannabis, alcohol and cannabis, and polysubstance use. A multinomial logistic regression model examined the association between sexual identity and each substance use group, controlling for demographics. RESULTS: Across both groups, no substance use was the most common pattern. Polysubstance use was the most common substance use pattern among sexual minority females. In adjusted regression models, sexual minority females were more likely to report cannabis-only (adjusted odds ratio [AOR] = 2.58), tobacco/nicotine and cannabis co-use (AOR = 1.74), alcohol and cannabis co-use (AOR = 2.50), and polysubstance use (AOR = 2.60), compared to heterosexual females. [Correction added on 23 November 2022, after first online publication: In the preceding paragraph, the AOR and CI values were corrected.] DISCUSSION AND CONCLUSIONS: Substance use patterns that involve cannabis are more common among sexual minority females. SCIENTIFIC SIGNIFICANCE: This study extends prior research by using a large sample of females to examine differences based on sexual identity in patterns of tobacco/nicotine, alcohol, and cannabis use beyond single substance use and considers co-use and polysubstance use.

Discrimination, Substance Use, and Mental Health among Sexual and Gender Minority Adults Accessing Day Shelter Services.

BACKGROUND: Sexual and gender minority (SGM) adults are overrepresented in the population of individuals experiencing homelessness, and high rates of substance use are common in this group. Plausibly, poor mental health and discrimination may contribute to substance use among SGM adults experiencing homelessness. This study described participant characteristics, and the interrelations among sociodemographic variables, substance use, mental health, and discrimination experiences among 87 SGM adults seeking services at a day shelter in Oklahoma City, OK. Discrimination experiences were characterized by race (White vs. non-White), sex (female vs. male), sexual identity (heterosexual vs. sexual minority), and gender identity (gender conforming vs. gender minority). METHODS: Participants reported their past 30-day tobacco (cigarette/cigarillos, alternative tobacco products [ATP]), alcohol, and marijuana use, as well as everyday and lifetime major discrimination experiences, substance use problems, depression, anxiety, and post-traumatic stress disorder (PTSD). Independent samples t-tests examined differences in discrimination based on substance use and mental health. RESULTS: Participants had high rates of tobacco and marijuana use, substance use problems, depression, anxiety, and PTSD. Over 80% reported experiencing everyday or lifetime major discrimination. Depression and PTSD were associated with ATP use, and anxiety was associated with alcohol use. All mental health variables were associated with substance use problems and everyday discrimination. Depression was associated with lifetime major discrimination. CONCLUSIONS: SGM adults accessing shelter services frequently experienced discrimination and poor mental health, and substance use was common. Future research should examine the causal impact of discrimination on mental health and substance use among SGM adults experiencing homelessness.

The relations between discrimination, stressful life events, and substance use among adults experiencing homelessness.

The current study investigated whether stressful life events and everyday discrimination experiences were associated with using one or more substances in the past 30-days and substance use disorder (SUD) among adults experiencing homelessness. We obtained survey data from adults (N = 501) seeking services at a day shelter. Participants self-reported whether they used cigarettes, other tobacco products, cannabis, alcohol, opioids, amphetamine, and cocaine/crack in the past 30-days, and the total number of substances used were also calculated. We measured stressful life events and everyday discrimination using validated scales. We used multivariable logistic and negative binomial regression analyses to evaluate hypothesised associations. Results indicated that reporting a higher number of stressful life events was associated with past 30-days cannabis, tobacco, alcohol, and other substance use, screening positive for a SUD, and using a greater number of substances in the past 30 days. After accounting for stressful life events, everyday discrimination was associated with only past 30-days cannabis use. Overall, we found that reporting stressful life events was related to current substance use and screening positive for a SUD. Findings suggest that life stressors, and discrimination to a lesser extent, were associated with substance use and SUD among adults experiencing homelessness.