“…[1][2][3][4][5] An association between D 3 and B 12 levels has been reported in a few studies recently from Turkey in children and adolescents. 6,7 We would like to report a similar study on adults from our institute. After ethics committee approval, we conducted a retrospective analysis of vitamin B 12 and D 3 levels of 729 adults (male to female ratio, 308:421) between 18 and 65 years, who had undergone annual medical check-ups.…”