How come people age much slower they did they used too?

People like 10 years ago 20 years 30 years ago 40 years ago 50 years ago 60 years ago 70 years ago 80 years ago 90 years ago and 100 years ago used too age much faster people back then like people in Hollywood and real people used too look so much older people in their 20's looked like people in their 30's people in their 30's looked like people in their 40's people in their 40's looked like people in their 50's people in their 50's looked like people in their 60's and people in their 60's looked like people in their 70's today people in their 20's look like people in their teens people in their 30's look like people in their 20's people in their 40's look like people in their 30's people in their 50's look like people in their 40's people in their 60's look like people in their 50's how come people today in their 20's people in their 30's people in their 40's people in their 50's and people in their 60's don't age as fast like they did 10 years ago 20 years 30 years ago 40 years ago 50 years ago 60 years ago 70 years ago 80 years ago 90 years ago and 100 years ago.