Diabetes Mellitus is an endocrine disorder and the complications arising from the disease is the leading cause of death worldwide. Vitamin B12 is a water soluble vitamin and its deficiency results in disruption of methylation process which leads to accumulation of serum and intracellular homocysteine and methylmalonic acid which gets accumulated in the myelin sheath and leads to formation of abnormal fatty acids, resulting in neurological manifestations. Glycated Hb is used as a guideline to check the status of patient's glycemic control for preceding 3 months. The objective of this study was...