Board Thread:Naruto Discussions/@comment-32617252-20171123174833/@comment-734582-20171123184818

Vladosaurus wrote: From him being an Uzumaki, to being Asura's reincarnation, to being Kurama's jinchuriki, to having six paths chakra and SPSM...I'd say that he has the best regeneration excluding the TTJ. I think the surpasses the feats granted by the strength of a 100 seal. I don't think those regeneration abilities stack though, or at least not very well. Hashirama's healing was so strong due to massive chakra reserves and strong lifeforce. The Kurama, Ashura and Uzumaki aspects all seem to grant these same effects.

While these overlaps would help to some degree (e.g. Uzumaki genes grant a longer life, compensating for the loss due to healing), it's not like being Ashura + Kurama would give him twice the healing.

Anyway, Naruto couldn't regenerate an arm so it seems limbs are outside his capacity. This also means he's not quite up there with a TTJ. We haven't seen him cut in half so we don't quite know if that matches the Strength of a Hundred Seal.