This federal Project Grant award from the National Institutes of Health (NIH) Trans-NIH Research Support program (CFDA 93.310) provides $838,837 to Harvard Pilgrim Health Care Inc.'s Office of Sponsored Programs Division to conduct research on the mental health impacts of discriminatory and supportive policies targeting LGBTQ+ adolescent and young adult populations. The research will use multi-method approaches, including nationwide surveys and in-depth qualitative interviews, to examine how LGBT-targeted policies such as religious exemptions, gender-affirming healthcare bans, and school curricula influence mental health outcomes and trajectories. The findings will inform healthcare providers, school leaders, and policymakers on actions to address mental health disparities in this population. The award period is from August 26, 2024 to July 31, 2025.