Siege

Well, that's what healing powers to an extreme would do theoretically. We get old because eventually the number of cells produced < number of cells that die.

So if his cells are constantly regenerating/replacing themselves, it would make sense that he doesn't get old.

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"Your name's Geek? Do you know the origin of the term? A geek is someone who bites the heads off chickens at a circus. I would never let you suck my dick with a name like Geek"

--Kevin Smith

This part just makes my posts easier to find