Inside the body, a 24-hour rhythm, known as the circadian rhythm, quietly coordinates when we sleep, wake, eat and recover.

New research suggests that the strength and timing of the body’s internal clock may be closely tied to dementia risk.

Your daily rhythm may matter more for brain health than previously thought. Older adults with weaker, more disrupted activity patterns were far more likely to develop dementia than those with steady ...

Weizmann Institute researchers say that progesterone and the stress hormone cortisol drive circadian rhythms; when out of ...

The results of a recent study suggest that people with a weaker or more irregular body clock, also known as circadian rhythm, ...

Alzheimer’s may advance by breaking the brain’s internal clock—and resetting it could help fight the disease. Alzheimer’s disease often interferes with a person’s normal daily patterns. Early warning ...

DALLAS, Oct. 28, 2025 — As modern lifestyles increasingly challenge the body’s natural circadian rhythm, the American Heart Association is spotlighting the potential health consequences of regular ...

Circadian rhythms that are weaker and more fragmented are linked to an increased risk of dementia, according to a new study ...

The return to "standard time" is better for our health according to sleep scientists, but the time change can be disruptive, and our bodies must also adjust to more hours of darkness as we head ...

A study reveals that weaker circadian rhythms may significantly increase the risk of developing dementia in older adults.

Plan on a glorious extra hour of sleep as most of America “falls back” into standard time. But make sure to get outside for some morning sun, too — it’ll help your body clock reset faster. Daylight ...