system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU] How does Captain America age?

He goes into the ice and comes out without aging a single bit. Then he gets sent back in time and seemingly aged normally, him being an old man at the end of Endgame. Does he age slowly because of the super serum?
gpt
He was 39 when he went back in time, if we assume he went back to that point at the end of WWII (1945) and lived till Endgame in (assuming 2019), he'd be 113. It's not an impossible age for a normal human, he was just very healthy for his age due to the super soldier serum, probably a couple decades younger physically compared to his real age.