Type 1 Diabetes and Type 2 Diabetes

To move away from basing the names of the two main types of diabetes on treatment or age at onset, an American Diabetes Association expert committee recommended in 1997 universal adoption of simplified terminology. The National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) agrees.

Former Names	Preferred Names
Type I juvenile diabetes insulin-dependent diabetes mellitus IDDM	type 1 diabetes
Type II adult-onset diabetes noninsulin-dependent diabetes mellitus NIDDM	type 2 diabetes

source: http://diabetes.niddk.nih.gov/dm/pubs/diagnosis/index.htm