> Alzheimer is sometimes referred to as diabetes type 3.
Just because it is referred to that way doesn't mean that it is actually the case.
The hypothesis that AD=Diabetes has been around for at least ten years [1]. If it were true, I would have expected to see some results by now about how diabetes interventions can slow the advance of AD, if not prevent and/or reverse it entirely. AFAICT there have been no such results. That casts the hypothesis into serious doubt IMHO.