5 things you need to know about aging

Your body is a machine, and like all machines, it shows wear and tear the longer it’s working. Once you reach retirement age, many of your body’s systems are no longer humming along as efficiently as they used to. Here’s what happens to your body as it ages—and what you can do to slow down Father Time. 

Get more lessons in longevity from the world’s healthiest communities, also known as Blue Zones, for your best life.

Medically reviewed in February 2020.