Suchołbiak A, Mikołajczyk O, Podolak M, et al. FOLATE AND MTHFR POLYMORPHISMS IN SLEEP, ANXIETY, AND DEPRESSION, AND VITAMIN B12 IN ANXIETY AND DEPRESSION: A REVIEW OF CURRENT EVIDENCE. IJITSS. 2026;3(2(50). doi:10.31435/ijitss.2(50).2026.5541