If you look younger than your calendar years, you are probably aging more slowly than others who look their age, or older than their age. The study's author believes that the face is a more accurate reflection of general health and rate of aging than elaborate blood panels, or other measures.
Perhaps Billy Crystal wasn't far wrong when he sang, burlesquing Fernando Lamas:
My father used to say to meHat tip to Drudge Report for the link.
Nando, don't be a schnook
It's not how you feel
It's how you look
You look marvelous
Absolutely marvelous