This paper has presented about Diabetes Mellitus and its types. It also discussed cure and treatment of diabetes, and complications which are linked to badly controlled diabetes. It is a common misconception among the people that diabetes is not a serious disease, but in reality, it affects overall life expectancy. In recent years, many types of research in the field of Biomedical describe the effect of Diabetes, and due to this disease life rate decreases. Diabetes is a group of metabolic disease in which a person has high blood glucose over a long period of time, because of inadequate production of insulin hormone from the pancreas. Many of the complications are arises due to badly controlled diabetes so better and proper cure is very necessary. Nowadays many researcher and scientist are working to find the best technique for controlling this disease and this may be helpful for better treatment for the diabetes mellitus in the future.