what i have discovered that makes the most sense to me is that type 1 is actually caused by a parasite in the pancreas. a good parasite cleanse would be in order AND then zapping of the area. there is also an internal zapper that you swallow called a sputnik(from russia) that actually goes through the gi tract and is said to kill parasites and spam stones out of hard to reach places like the pancreas.
i think the body has the ablility to rejuv any argan, but the longer it has been from the onset of type 1, the harder it would be to recover once the offending critters and gunk were removed from the pancreas.