A home health nurse is teaching a client who has a new diagnosis of type 1 diabetes mellitus. Which information should the nurse include? Select All That Apply.

An autoimmune response can trigger the onset of type 1 diabetes mellitus.

Alpha cells in the pancreas are damaged in type 1 diabetes mellitus

Type 1 diabetes mellitus usually develops before age 20.

Type 1 diabetes mellitus is treated with oral anti-glycemic medications.

Regular exercise can reduce insulin requirements in clients who have type 1 diabetes mellitus.