Pulseless electrical activity (PEA) is an especially serious heart arrhythmia related to weak or undetectable electrical activity. PEA can be a precursor to sudden cardiac death, so its symptoms ...

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

Elevated dementia risks among older adults were associated with weaker and more fragmented circadian rest-activity rhythms ...

And those who experienced peak activity later in the afternoon — from 2:15 p.m. onward — had a 45% higher risk of dementia ...

Australian researchers have found compelling evidence that insomnia may be linked to disruptions in the brain’s natural 24-hour rhythm of mental activity, shedding light on why some people struggle to ...

Older men who have a weak or irregular circadian rhythm guiding their daily cycles of rest and activity are more likely to later develop Parkinson's disease, according to a new study by scientists at ...

Older men who have a weak or irregular circadian rhythm guiding their daily cycles of rest and activity are more likely to later develop Parkinson's disease, according to a new study. Older men who ...