Clocks coming out of a large clock as a 3D illustration. We age along two clocks: a chronological clock and a biological clock. The former is just a measure of how many birthdays you have celebrated — ...

"Biological aging tests," also called aging clocks, can predict your risk of age-related disease, disability, early mortality and more — but are they ready for prime time? When you purchase through ...

When used correctly, they can help us unpick some of the mysteries of our biology, and our mortality. Be honest: Have you ever looked up someone from your childhood on social media with the sole ...