ASweetLife published this post about the connection between diabetes and Alzheimer's disease. https://asweetlife.org/the-alarming-diabetes-alzheimers-connection/
They talk mostly about Type 2 and prediabetes. However they discuss the fact that it's caused by damaged blood vessels in the brain, so I think it applies to Type 1 as well.
My father has been struggling with dementia for about a year, and he was also diagnosed with prediabetes several years ago. This piece mentions developing insulin resistance in the brain - which makes me wonder if his dementia is impacting his blood sugar, or if his blood sugar is contributing to the dementia.
In any case, does anyone have more insights on this? I'd really like to discuss and become more educated on this topic