Wonder why babies nap on some days but not on others? Or why older people wake up earlier? Mathematical modelling of sleep regulation provides some surprising answers to these and other questions, ...

A Columbia nutrition expert is translating expertise on the connections between diet, better sleep and heart health into a ...

Cortisol and melatonin are the seesaw hormones that help with sleep. Cortisol is suppressed at night when melatonin is high, ...

A new study finds that leaking electrons from brain mitochondria may act as a biological switch to trigger sleep under stress ...