Board Thread:Naruto Discussions/@comment-34938099-20180723141347/@comment-34194151-20180813201135

@Arturia, yes, what J0A20 said. Given the enormous amount of type he spent in battle and healing himself, his cell teleomeres likely shortened to the point where he couldnt create any more functional cells. I take that as the explanation for his death rather than dying to some fodder shinobi