Study participation will last about 2 to 2 1/12 years and will include a brain MRI without sedation, as well as a functional MRI and neurocognitive testing. The children with T1D will wear a continuous glucose monitor (CGM), will follow up every 3 months and will be asked to wear the CGM each time. The structural and functional MRI and neurocognitive testing will be repeated 2 yrs from baseline.
The healthy controls will also undergo MRI and cognitive testing as well as have a blood sample at baseline and after 2 years.
Parents of newly recruited subjects will also have abbreviated IQ testing.
