Years ago, Billy Crystal did a character, "Fernando," based, ostensibly, on the late actor Fernando Lamas. No matter how terrible your life might be, Fernando would, if you looked great, allow that you looked mahvelous! and that, of course, was what mattered. Because -- especially in Hollywood -- it was better to look good than to feel good.
Turned out out he was right.
Apparently, people who look younger tend to live longer than people the same age who look their age.
Those of you who don't do links, the basic story allows that research, using identical twins and physical and cognitive tests, demonstrated a relationship between looking younger and living longer. One theory involves telomeres, those genetic tip ends. (I believe the women who discovered the chemical telomerase and named it just won the Nobel prize.)
Ain't life strange?