Any type 1 diabetics on here not taking insulin?

[cobalamin]

The reason I am asking is because my younger brother is a diagnosed type 1 diabetic that only needs insulin when he stops doing something relating to his profession. He runs his own masonry business and lifts a ton of stone consistently on a daily basis. IGF-1 comes to mind as the regulator of his glucose metabolism.

Is there anyone here with type 1 diabetes not taking insulin at all?