I think it our soft lifestyles that makes us age slower and stay looking younger longer.
On Nick at night they were playing All In The Family - the one where Edith goes through menopause. It struck me that Archie & Edith were a couple in their 40s. If you saw two people who looked like them today you would swear they were in their upper 50s if not 60s.
Same with Meathead & Gloria, even though they were a couple in their early 20s, by today’s standards they look in their mid 30s.
Watch the Newlywed or Dating game from back then, it’s the same, everyone looks about 10-15 years older than their age compared with people today.
Maybe it’s the sun also, if the “the sun is more active thus blocking more cosmic rays thus the real cause of global warming” people are right, it could mean people look like they are aging slower because of fewer cosmic rays are hitting them and it takes longer for aging skin damage to show.
It’s true, people are looking and staying younger. And while I love “All in the Family”, as a woman in her 40s, I’m thankful I don’t look like Edith, LOL.