Description:This project aims to evaluate the association between environmental exposure to perfluorinated alkyl substances (PFCs) and the development of risk factors for cardiometabolic disease in youth diagnosed with diabetes in the SEARCH Cohort Study. The longitudinal study of newly diagnosed cases of type 1 and type 2 diabetes examines serum metabolome changes at baseline and follow-up at approximately 5 years (all >3 years from baseline). Exposures to PFCs and biological effects characterized by serum metabolome changes will be associated with known cardiometabolic risk factors in youth diagnosed with diabetes.