"The purpose of the current study was to examine associations between time spent on multiple popular social media platforms and a variety of mental health-related outcomes in a sample of young adults.", janeiro de 2025 - https://pmc.ncbi.nlm.nih.gov/articles/PMC12488834/

Conectividade funcional (FC) é afetada por uso de redes sociais - https://pmc.ncbi.nlm.nih.gov/articles/PMC8996346/

Revisão e meta-análise sobre a influencia de redes sociais na saúde mental - https://www.sciencedirect.com/science/article/pii/S2590291125005212

"The effects of social media addiction on depression and anxiety among university students: The mediating role of family environment" - https://pmc.ncbi.nlm.nih.gov/articles/PMC13168417/

Nenhum é específico de videos curtos, mas podem dar um norte já. Talvez se pesquisar "short video" nesses sites deve achar alguns sobre isso