Mayo Clinic YouTube I was watching a YouTube video and an ad popped up about "Type 3 diabetes" and dementia. I'm a Type 2 diabetic, so I got curious. From my initial readings: It's an accepted fact that people with Type 2 diabetes have a higher risk of Alzheimer's disease . One reason may be reduced blood flow to the brain because of damaged blood vessels, Dr. Bu explains. "And, therefore, the supply of essential nutrients to the brain is also impaired." Dr. Bu has found genetics may also be to blame. A variant of the so-called Alzheimer’s gene, APOE4, seems to interfere with brain cells' ability to use insulin, which may eventually cause the cells to starve and die. Unofficially, it's called Type 3 diabetes. "What it refers [to] is that their brain's insulin utilization or signaling is not functioning. Their risk of developing Alzheimer’s disease is about 10 to 15 times higher." - MAYO CLINIC Rochester, Minnesota Are some c...