You’ve probably heard of type 1 and type 2 diabetes, but did you know there’s possibly a third option as well?

For just over two decades now, some scientists have argued that type 3 diabetes is an apt title for what happens in some cases of Alzheimer’s.

Not all types of dementia are the same, but emerging evidence suggests that in at least some cases, impaired insulin signaling could be a form of neurodegeneration.