chronological age

A new test may help show how your lifestyle affects your cellular aging.
SPECIAL FROM You’ve probably heard a thousand times that as you age, your body and mind begin to “go”—you
Molecular biologists have observed that people's cells often age at different rates, leading them to make a distinction between
Would-be trophy wives, listen up. That rich geezer you're considering for a husband - if you actually found someone left with money these days - may not be the best choice to father your children.