IAPP and type 2 diabetes mellitus: Peptides mimicking the cross‐amyloid interaction surface of the type 2 diabetes (T2D) human islet amyloid polypeptide (hIAPP) with the Alzheimer's disease β‐amyloid protein Aβ40/42, termed interaction surface mimics (ISMs), have been shown to be nanomolar inhibitors of amyloid self‐assembly of Aβ40/42.1 The molecular mechanism is, however, not well understood.