Background:Diabetes Mellitus is the most common metabolic disease and is posing as a major public health problem in the world, developing countries like India in particular. India has the second highest number of diabetics worldwide after China. Diabetes Mellitus is characterized by chronic hyperglycemia due to defective insulin secretion and / or insulin resistance. Non-insulin dependent diabetes mellitus (NIDDM) or type 2 diabetes mellitus accounts for more than 85% of the all the diabetics. It can occur at any age but is most common between 40 to 80 years of age. Macro minerals (calcium, magnesium, chloride, sulphur and phosphorus) play an important role in intermediary metabolism and cellular function, including enzyme activities and electrical gradients. The present study of these parameters is essential in clinically diagnosed patients of type 2 diabetes mellitus to show their role in the pathogenesis and to ascertain their role as possible biochemical markers of the disease progress