It's a commonly held belief that before artificial lighting, human sleep was 'naturally' divided into two distinct periods, but how true is that?

Before I was diagnosed with bipolar disorder, I didn’t think twice about sleep. I’d always been a night owl, but I went to bed reasonably early. And I never had trouble falling asleep or getting eight ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. Most of us treat sleep like it’s a simple budget item: we ...

Sleep is an independent and modifiable risk factor for cardiovascular disease (CVD) , prompting a shift towards routine bidirectional screening in clinical practice. Experts concluded the Sleep ...

For hundreds of years, night didn't mean a long sleep. Long before electric lights lit up homes and streets, people lived ...

A new study suggests that while healthy preterm children have more medical sleep problems than full-term children, they are more likely to fall asleep independently. Results show that preterm children ...

As the clocks "go forward" for large parts of the U.S. this weekend, you may well miss the resulting lost hour of sleep. However, the health impacts of the shift into daylight saving time (DST) are ...

A new study has found a link between rapid eye movement (REM) sleep and Alzheimer’s disease. The research from China, published in the journal Alzheimer’s & Dementia by the Alzheimer’s Association, ...

In the 1990s, a woman approached sleep neurologist Christopher Jones at the University of Utah with an unusual complaint. She would fall asleep very early in the evening and wake up for the day at 2AM ...

Atypical N3 sleep patterns correlate with longer ICU stays, indicating potential as a biomarker for prolonged admissions and warranting further investigation. Hypersomnia in ICU patients is linked to ...