Hmm. I suppose this would be a good time to put forth my theories.
Short Answer: Yes.
Long Answer: Everyone is incorrect about Wolverine's abilities, including some of the people who write him. Wolverine does not heal, he reforms.
Hear me out. His body, the flesh, separate from him as a person, is essentially human, if tough. His cells will not DIE from lack of oxygen, like ours, but he cannot have biological function, as there is nothing mutant about his processes. Without oxygen, he cannot move or think, but he won't die. He simply... stops. His ACTUAL powers are relevant.
Wolverine has 2 powers that define all his abilities:
1. Wolverine is a TOTEM. He is likely the totem for the Wolverine Spirit, but in theory he could be any hostile, small, clawed animal totem (like a honey badger) . His claws, ferocity and berserker rage come from this (as having healing powers in no way touches these qualities). This is reinforced by other totems, like Spider-man - little known fact is that Spider-man has the abilities to see in the dark, talk to and control spiders, and grow wrist "fangs" in the presence of other totems, and come back to life from death once, all as a consequence of being the Spider Totem, and not his mutations.
Suspension of disbelief aside, random mutation to develop animal qualities, that is, MANY qualities and not just one, from one specific animal, is unlikely. If you're part animal, some intelligence likely made you that way.
- Wolverine's ACTUAL power is that of entropic reformation.
Every sentient creature, at least in the Marvel Universe, possesses an astral form. That is, a mental construct that is the collection of your thoughts and perceptions and memories that represents you on the Astral plane, and connects to your body as your "mind" or "soul". This Astral plane is also the source of all psionic abilities and the Power Cosmic itself.
Wolverine's BODY is not the mutation. His abilities are actually psionic.
All matter breaks down into its simplest form naturally over time. It moves in the direction that takes the least energy to fall into. This is where Wolverine's powers dwell.
When he is injured, the disparity between his form, and his ASTRAL form, causes an entropic warp. The lowest energy state around his cells becomes "being part of Wolverine". This is why he does not require food to heal. When he is in the presence of his own matter, that is, he is torn or blown apart, he "heals" faster as his own matter returns to him. When he is disintegrated or burned, matter around him that was naturally breaking down, like radioactive isotopes, instead break-UP, absorbing ambient particles to rebuild him.
Once he is rebuilt, his natural bodily functions take over.
Yes, this means Wolverine doesn't actually need to eat.
Yes, this would make him largely resistant to poison and disease as the damage they do is corrected.
Yes, this means he can technically "change his shape" if he is mentally traumatized enough to change his self-image.
Yes, this would explain his resistance to psionic attacks, as his Astral form is constantly absorbing energy, his ACTUAL digestive system.
and Yes, this does mean Wolverine is immortal until he completely decides, even subconsciously, he is dead.
Here is where my theory majorly differs from others, though it's just a technicality.
If Wolverine were in a spacial vaccuum, yes he would "die". His DNA would begin to shred. He would freeze and most of his cells would burst as ice expanded in them. However, as soon as he was exposed to a higher energy, higher entropy system, even a star, he would begin to reform (yes, yes.. and be destroyed at the same time so he'd be trapped forever).
It literally requires the Power Cosmic, and the destruction of his astral form, to kill Wolverine.
C'mon. Tell me i didn't get this totally right.
Edit: I'll add more reason why i believe this is the case.
- Notice there are no identical clones of wolverine. No one collects his body parts or farms him for adamantium beta. If i am correct, he CANNOT be cloned. The effects of his abilities can be, more or less, duplicated, but HE cannot. Any matter, anywhere, that has his exact same genetic code would be "his" and would rapidly break down and cease to exist as he reformed..
Why else arent there 40,000 cyborg wolverine assassins around as he leaves chunks of himself behind EVERY fight? Why do they always go after HIM himself?