system
Given the following post, respond as if you're commenting on Reddit:
human
[Xmen] How does Wolverine's healing factor work?

Has it been explained in the comics? I've just read that it comes from some dimension(s)? 

I've read that a person's metabolism is responsible for all the healing processes and most of it. So how does he have so strong healing enough to cure anything and everything?
gpt
Not explicitly, no.  In fact it's been really really inconsistently portrayed over the years.  

He once spent a few weeks stuck in the bottom of a boat, he survived by cutting slices of this arm and eating them.  So clearly his healing is powered by something other than his metabolism.