Becoming a new mother brings more than just joyful chaos it delivers a profound and persistent sleep shock. A new study reveals that first-time moms lose not just total sleep, but crucial ...

A large US study finds insufficient sleep is linked to shorter life expectancy, ranking just behind smoking and ahead of diet ...

This story was featured in The Must Read, a newsletter in which our editors recommend one can’t-miss story every weekday. Sign up here to get it in your inbox. For most of my adult life, I’ve been ...

Share on Pinterest Researchers say that blue light may not significantly affect a person’s circadian rhythms. AleksandarNakic/Getty Images Blue light from the sun is vital in regulating a person’s ...

Share on Pinterest Could sleeping in on the weekends help lower heart disease risk? Anna Malgina/Stocksy “Catching up” on sleep over the weekend could reduce the risk of heart disease by 20%, a new ...

The findings challenge the conventional view that daytime sleepiness is always a result of insufficient sleep, poor sleep hygiene or classic sleep disorders. Instead, they suggest that internal ...