Background and Objectives: Incidence of neurocognitive and psychologic disorders in elderly seems to become high There are numerous factors affecting neurocognitive functions like vascular factors, Vitamin B12 and folate and homocysteine levels. The aim of this study was to assess the relation between neurocognitive- psychologic markers and homocystein (Hcy), V.B12 (Cobalamin) and folate in ser...