User blog comment:Stone Roger/The Boy In The Latest Manga Chapter/@comment-201.68.16.117-20111002002941

if you think about it, it was never show Natsu gowth when he was with Igneel, and when asking a question about were he heard about Wendy, he said " I think it was 20" and hit his head and stopped talking, perhaps being close to a dragon a human loses the capability to age, but by staying away they managed to grow, maybe 7 years time skip is not necessary a Time skip but maybe, Acknologia power threw them in to the future, besides if dragons can actually stop humans from aging, maybe they didn't age at all, but its better await to see what actually happened.