Board Thread:Naruto Discussions/@comment-25626003-20150728002625/@comment-4646462-20150919145349

Healing abilities, particularly surrounding Kurama and the Sage, got nerfed to shit near the end of the series. Earlier on, Kurama's "bad" chakra was able to heal grievous injuries, such as a missing limb, a hole in the chest, or constant 3rd-degree burns from the chakra, in a matter of seconds; not even Madara's Six-Paths-enhanced Hashirama healing could go that fast. Then Naruto, who was shown to be able to regenerate an eye, is unable to restore severed or disintegrating body parts, and particularly-bad damage takes a matter of days for his Six-Paths chakra to heal, rather than seconds. Because, you know, Naruto having excellent healing abilities would make Sakura useless. :/