Menstruating women who sleep less than six hours a night suffer worse periods. But leading treatments for insomnia rarely look at menstrual health.

A growing body of research shows that nutrition, sleep, exercise and a host of other lifestyle choices can help optimize the immune system. But they are no substitute for life-saving vaccines.

When COVID-19 lockdowns triggered changes to teens' daily routines, they woke up and slept later, which reduced daytime sleepiness.

A nap won't make up for a sleepless night, according to a new study that judged people's effectiveness on cognitive tasks after various amounts of rest.

People with obstructive sleep apnea have a higher risk of sudden death and also of hypertension, coronary artery disease, and congestive heart failure.

New findings in mice about sleep loss and memory may have implications for human performance and learning strategies, researchers report.

Whether your DNA predisposes you to being an "early bird" or a "night owl" affects how quickly you adapt to "springing forward" for daylight saving time.

Children with obstructive sleep apnea are nearly three times more likely to have high blood pressure as teenagers. But growing out of it negates the risk.

Children who learned mindfulness techniques such as deep breathing and yoga slept longer and better, even though the curriculum didn't include sleep tips.

"It creates this vicious cycle where engaging in bedtime media use can result in poor quality sleep, which over time fuels more bedtime media use."