“IMPACT OF METFORMIN AND HIS RELATIONSHIP WITH HBA1C, FBG AND VITAMIN B12 IN MALES AND FEMALES DURING THE DIFFERENT AGE GROUPS IN THE HUMAN BODY”. Taj Al-Ma’rifa Journal , vol. 3, no. 2, May 2026, pp. 408-95, https://doi.org/10.64943/jkc.2025.030217.