This is according to researchers who have analyzed genotypes and data pulled from electronic health records (EHRs). Knowing those groups and health risks associated with them may help provide information on the most appropriate treatment. Researchers compared several hundred variables, including laboratory test results, medication history, blood counts, metabolic panels, height, weight, and genotype data from 2551 patients with type 2 diabetes.  They found commonalities settled into three distinct clusters. Those in group 1 were younger, more obese, and had higher relative risk for diabetic nephropathy and retinopathy; group 2 had higher risk for cancer and cardiovascular disease; risk in group 3 was associated most strongly with cardiovascular disease, neurological diseases, allergies, and HIV infections. Sci Transl Med. 2015;7(311):311ra174. Abstract