“…In support of these ideas, several studies now document persistent trends in sexual orientation differences in mental health (Liu et al, 2020;Peter et al, 2017;Raifman et al, 2017), substance use (Fish & Baams, 2018;Fish, Turner et al, 2019;Fish et al, 2017), and the factors implicated in sexual minority health inequities (e.g., victimizations, family support; Watson et al, 2019;Poteat et al, 2020). At the same time, research on the developmental timing of sexual orientation and gender identity-related disparities in substance use (Fish & Russell, 2019a), mental health (Fish & Russell, 2019b;La Roi et al, 2016), and peer victimization (Martin-Storey & Fish, 2019;Mittleman, 2019;Fish & Russell, 2019b) demonstrate that these disparities emerge at early ages.…”