Abstract
Type 2 Diabetes mellitus is one of the leading cause of death these days, and a well known risk factor for cardiovascular disease such as myocardial infarction or stroke. There is now extensive evidence on the optimal management of diabetes, offering the opportunity of improving the immediate and long-term quality of life of those with the condition. Many guidelines have appeared internationally, nationally, and more locally in recent years, but most of these have not used the rigorous new guideline methodologies for identification and analysis of the evidence. I will introduce here major guidelines from Korean Diabetes Association, American Diabetes Association, Japan Diabetes Society, and International Diabetes Federation.