Past age 50, men are much more likely to have REM sleep behavior disorder than women. Jose Luis Pelaez/Stone via Getty Images Every night, you go through four to five sleep cycles. Each cycle, lasting ...

A little-known and poorly understood sleep disorder that occurs during the rapid eye movement, or REM, stage of sleep has been garnering attention for its role in foreshadowing neurodegenerative brain ...

Clear overview of sleep disorders, covering how they differ, why they occur, common signs, and when ongoing sleep issues may ...

Insomnia is the most well-known sleep disorder, but it’s far from the only one. Countless people of all ages struggle with sleep disorders that negatively affect the quality of their sleep, cause them ...

About 20% to 35% of the population suffers from chronic sleep disorders—and up to half of all people in older age. Moreover, almost every teenager or adult has experienced short-term sleep deprivation ...

More than 50 million Americans have a sleep disorder. Insomnia is the most common sleep disorder. Sleep apnea can cause breathing to stop 30 or more times in one hour. More than 50 million Americans ...

Sleep disorders can affect people of any age. Delayed sleep-wake phase disorder, restless legs syndrome, and insomnia are a few examples of disorders that may disrupt sleep cycles in teens. Sleep-wake ...

Sleep-related eating disorders can be disruptive, dangerous and hard to notice. Here's what medical experts say about symptoms, causes and treatment. Joshua Cox-Steib Joshua Cox-Steib is a sociologist ...

Advanced sleep phase disorder is a rare condition that causes your natural circadian rhythm, or sleep-wake cycle, to occur earlier than typical. As humans, our sleep-wake cycle— also known as our ...

Sleep is a major determinant of physical and mental health and, conversely, sleep deficiency is associated with a variety of clinical conditions including cardiovascular diseases and psychiatric and ...