The role of melatonin supplementation in modulating insomnia severity: a cross-sectional investigation: Melatonin supplementation in modulating insomnia severity. Journal of the Saudi Society for Food and Nutrition (JSSFN), [S. l.], v. 18, n. 1, p. 57–66, 2025. DOI: 10.33948/jssfn-KSU-18-2025-550. Disponível em: https://www.japksu.com/index.php/SSFN/article/view/550. Acesso em: 30 may. 2026.