Over time, untreated diabetes can cause damage to your blood vessels, including vessels in your brain. Many people who have T2D don’t know that they have the condition, which may delay diagnosis and treatment.
Type 3 diabetes is a term used by some researchers to describe the theory that insulin resistance and insulin-like growth factor dysfunction in the brain may cause Alzheimer’s disease. More research needs to be done to understand the link between diabetes and Alzheimer’s disease.