Originally Posted by
Revolutionary_Jack
As per the preview pages and synopsis and general canon. Spider-Man was 15 when he got bitten by the spider in AF#15. Since that was published in August 1962, and Spider-Man is now 57 years old in publishing history, that means a real-time aging Peter would be 15+57...or 72 years in 2019. Or to put it, Peter would be in his twenties in the 70s, thirties in the 80s, forties in the 90s, fifties in the 2000s, and sixties in the 2010s. Obviously there's going to be some overlap and so on.
The concept of powers slowing down the aging powers doesn't seem to be true in the case of Spider-Man in 616 Canon since he has grown and aged visibly from 15 to his mid-20s (at least 10 years have passed in ASM as per Post-BND timeline and Spencer's ASM#14).
I always have problems with that trope, i.e. superpowers mean they age slowly especially when it's not established and clearly defined and seems arbitrary. Like DC comics and other writers seem to assume that Superman is immortal or that he will never age and so on, but if that were true how is that Clark Kent aged visibly from infant to early 30s...why does immortality and agelessness begin on that year and not before? I never bought the idea that Superman's Kryptonian powers means he won't age the same way other people do, even if that's basically become accepted wisdom and norm at this point. It works with Thor and Wolverine who are long-lived immortals who have aged at a slower rate across millenia (in Thor's case) and centuries and decades (in Wolvie's case) but not in the case of Clark Kent who is 30 years old per comics time and looks every bit the 30 years of his life. Obviously the story reasons is they don't want to age Clark Kent out of his supporting cast (i.e. a Lois who ages while a Clark who stays young all the time...the Dr. Manhattan sob story that doesn't have place in any story with the S Shield) but there's nothing visible and established there that Superman won't age.
In the case of Peter, all the spider-bite did was give him powers and abilities of a spider...but it hasn't frozen Peter's aging process since he is never shown aging slower than Harry, Flash or MJ.