On the eve of Daylight Saving Time, I flew home to Vermont from California. Crossing several time zones, I arrived near midnight. At 2 a.m., the clock jumped ahead an hour, leaving me discombobulated.

Women's fertility has remained closely tied to their age for multiple decades. The biological clock concept has persisted as a widespread belief, which states that women experience rapid egg quantity ...

Researchers have developed a new "body clock" tool that calculates people’s biological age — and could even predict the risk of disability or death. The tool, which comes from the University of ...

Learn more about how human cycles, such as sleep and the menstrual cycle, may have once been in sync with the lunar cycle. However, artificial light may now be making these cycles shorter and ...

If your teen is raiding the fridge late at night, science may have an explanation. A new study from Mass General Brigham and the Warren Alpert Medical School of Brown University found that there is a ...

WASHINGTON (AP) — Most of America “springs forward” Sunday for daylight saving time and losing that hour of sleep can do more than leave you tired and cranky the next day. It also could harm your ...

EDITOR’S NOTE: Starre Vartan is the author of “The Stronger Sex: What Science Tells Us About the Power of the Female Body,” which will be published on July 15. People who lived through the Irish ...

Researchers have developed a new “body clock” tool that calculates people’s biological age — and could even predict the risk of disability or death. The tool, which comes from the University of ...