User blog comment:AokijiSencho/Theory on Chopper and Luffy/@comment-24850639-20140715135037

I don't see the series ending with Luffy as an old man, his youthfulness and exuberant energy is kinda what makes him..........well him. But it definitely does make a lot of sense for Chopper to make some kind of huge breakthrough as a doctor. I just don't want to give in quite to that being something concerning Luffy. I kind of want to hear an explanation as to why Gear Third doesn't shrink his body anymore first. Didnt' seem like he needed medical intervention to fix that, and in fact he didn't have access to it back then anyway.