User blog comment:LittleFlowerKusa/Clone Aging/@comment-5188108-20120909174017/@comment-432124-20120910040039

Well, they definitely don't age slower than humans during their childhood years. I mean, look at Superman. According to Greg Weisman, Superman was born in 1977 in the YJ universe, and he looks like he's aged that much and he seems like he's had a normal childhood (by human standards of course).