User blog comment:Xilinoc/Ch. 541 - THE BLADE AND ME 2/@comment-7924893-20130612200535/@comment-10699642-20130613113629

Well I must say thats something that I am wondering about. Quincy are supposed to be humans right, so why is Yhwach not only over 1000 years old but even looks younger as Yamamoto who aged quite a lot in these 1000 years. And as far I understood it Shinigami dont age as fast as humans.