It is acknowledged that there are at least two contrasting forms of diabetes mellitus – type 1 vs type 2 diabetes. One of the most frequently asked questions is “What is the difference between type 1 vs type 2 diabetes?” To reply to this question we must inevitably to possess some canonical information about diabetes including the knowledge of two essential types of diabetes mellitus that is type 1 vs type 2 diabetes. Diabetes is a chronic suffering of glucose metabolism. This condition results from low output or poor activity of insulin that is secreted by beta-cells of the islets of Langerhans in the pancreas. Insulin governs the function and storage of glucose. The poor output or deficient action of insulin results in the breakdown of glucose metabolism. The transportation of sugar into the cells crosswise the cell membrane is equally broken. The glucose levels become increased in the blood and urine. The affected persons experience weakness, thirst, hunger, scratching, weight loss, and massive urination. Extraordinary blood glucose concentrations result in protein and fat decomposition with subsequent vascular degeneration and quicker atherosclerosis development. Diabetes may lead to diabetic acidosis with high concentrations of ketone bodies in the blood. In this situation, medical professionals observe sweet flavoured respiration of their patients owing to ketone bodies. All these stipulations make people inquire their medical practitioners “What are the 2 central forms of diabetes mellitus and how to exist with them?” Answering the inquiry “What are the two central forms of diabetes mellitus?” caregivers identify two kinds of type 1 vs type 2 diabetes: insulin-dependent diabetes mellitus (Type 1) and noninsulin-dependent (Type 2).