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A new study finds that sleep timing is linked to dementia risk, as people with weak circadian rhythms face a 2.5 times higher ...

You just can’t seem to get to bed before 2 a.m. Or maybe the opposite happens: You wake up at 3 a.m., ready to start your day. Then again, it could be shift work that’s keeping you up at night and ...

Circadian rhythm sleep-wake disorders are a group of conditions in which the timing of an individual’s sleep is disrupted. Circadian rhythms are often referred to as the body’s internal clock or our ...

Researchers have found that circadian rhythm disruption (CRD) is a common factor among mental health conditions including anxiety, autism, and schizophrenia. The corresponding study was published in ...

What makes someone a "morning lark" or a "night owl?" Why does jet lag hit us so hard, and why do some people struggle each winter with seasonal affective disorder? Clues to these puzzles may lie in a ...

If your mental health has been declining, your sleep-wake cycle may be to blame, according to a new review of literature. Taylor Leamey wrote about all things wellness for CNET, specializing in mental ...

DEAR ABBY: I am acquainted with a single mother of a 4-year-old daughter. The mother is depressed and suffers from a circadian rhythm disorder. They don’t go to bed until 4 to 6 in the morning and ...

Delayed sleep phase syndrome (DSPS) is a most prevalent circadian rhythm sleep disorder and is marked by a delay in the timing of sleep episode compared to desired or necessary sleeping and wakeup ...

Non-24-hour sleep-wake disorder (N24SWD) occurs when your sleep-wake cycle gradually shifts out of sync with the 24-hour day. It affects about half of blind people, but it can also affect those with ...

What makes someone a "morning lark" or a "night owl?" Why does jet lag hit us so hard, and why do some people struggle each winter with seasonal affective disorder? Clues to these puzzles may lie in a ...