New research finds that turtles in the wild age slowly and have long lifespans, and identifies several species that essentially don't age at all.

Sedentary tendencies may be robbing aging humans of a key benefit of exercise: the myriad repair mechanisms that heal the body from the minor dings and tears of hunter-gatherer and farming lifestyles.

Certain food choices add minutes of healthy life, and others do the opposite, say researchers. Here's what they say to eat or avoid.

Lonely older adults live fewer years than non-lonely peers—and they're less active and in poorer health, a new study shows.

More people are living to be 100 years old, but how long will human lifespan reach in the 21st century? Researchers may have some answers.

The average person today can expect to live almost twice as long as people in the 1850. But don't get too excited. There's still no cheating old age.

Gregarious female giraffes that develop a sense of larger community live longer than those with fewer friends, a new study shows.

A metabolite called colanic acid can extend the lifespan of worms as much as 50%. New research uses optogenetics to clarify that discovery.

Having a female bestie gives male baboons a better chance of survival, a new study shows.