What happens to the insulin-secreting capacity of a type 2 diabeticplaced on insulin therapy earlier than recommended? Can the externalsupply of insulin improve the functional capacity of the...

What happens to the insulin-secreting capacity of a type 2 diabetic placed on insulin therapy earlier than recommended? Can the external supply of insulin improve the functional capacity of the insulin-secreting cells, to some extent by providing some rest to these cells? Is inhaled insulin a suitable substitute for injectable insulin? Is there, or will there soon be, insulin in the form of a tablet?