The National Institutes of Health (NIH) is inviting applications for the R21 Exploratory/Developmental Research Grant under the opportunity titled "Bidirectional Influences Between Adolescent Social Media Use and Mental Health." This initiative aims to explore the complex relationships between adolescents' social media behaviors and their mental health, focusing on how social media can both contribute to and alleviate psychiatric symptoms. Given the increasing concerns regarding youth mental health in the context of social media, the NIH encourages innovative research proposals that consider various developmental stages and contexts of social media use, with a maximum funding amount of $275,000 available over two years. Applications are due by January 28, 2025, and interested parties can reach out to NIH Grants Information at grantsinfo@nih.gov for further inquiries.