Suchołbiak, A. et al. 2026. FOLATE AND MTHFR POLYMORPHISMS IN SLEEP, ANXIETY, AND DEPRESSION, AND VITAMIN B12 IN ANXIETY AND DEPRESSION: A REVIEW OF CURRENT EVIDENCE. International Journal of Innovative Technologies in Social Science. 3, 2(50) (Jun. 2026). DOI:https://doi.org/10.31435/ijitss.2(50).2026.5541.