Even one night of inadequate sleep can shift your hunger into overdrive, setting off a chain reaction in the brain. But one or two nights of solid sleep can help reset metabolism.

A common sleep aid restores healthier sleep patterns and protects mice from the brain damage seen in neurodegenerative disorders.

"How adolescents sleep influences how their brains function, and that influences their mental health outcomes."

Even small lifestyle changes – such as more social interaction and a better diet – can help reduce stress.

"Our study found that low oxygen levels from obstructive sleep apnea may be linked to cognitive decline..."

Poor sleep quality is linked to a brain region vulnerable to Alzheimer's disease, a new study finds.

Research suggests that how often people check social media − and how emotionally engaged they are with it − can influence sleep even more than how much time they spend online.

Is napping good or bad for you? An expert in sleep surgery digs into the benefits and drawbacks.

Waking up early may help you to adjust faster though.

Insomnia and bad sleep can lead to high blood pressure and increase hormone levels and inflammation.