As light levels fall in the evening, melatonin rises, preparing the body for sleep.” This suggests that with the right ...

Did the holidays mess up your sleep patterns? Maybe you stayed up late ringing in the new year, or changed time zones while traveling. Science journalist Lynne Peeples says the body's circadian ...

Your daily rhythm may matter more for brain health than previously thought. Older adults with weaker, more disrupted activity ...

Researchers found that people with weaker or more irregular internal clocks had a higher risk of developing dementia. View on ...

Syncing your circadian rhythm to a natural light-dark cycle could improve your health and well-being. nambitomo/iStock via Getty Images Plus Anyone who has suffered from jet lag or struggled after ...

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This weekend the clocks will roll back, signalling the end of daylight saving time and the start of long, dark winters. Of course, there is the short-term perk: the fact it allows us an extra hour in ...

A brain rhythm working in tandem with the body's natural sleep-wake cycle may explain why bipolar patients alternate between mania and depression, according to new research. The McGill University-led ...