Sleep

Sleep inertia, the groggy, impaired state upon waking, is uniquely associated with deficits in fine motor speed and executive function in older adults, even after accounting for overall daytime sleepiness and other hypersomnolence symptoms, according to a study from the Wisconsin Sleep Cohort published July 6 in the Journal of Clinical Sleep Medicine. The association […]

Measures of sleep fragmentation, including N1 percentage, stage shift index, and wake after sleep onset, along with daytime Maintenance of Wakefulness Test (MWT) latencies reliably differentiate narcolepsy type 1 (NT1) from type 2 (NT2), according to a test-retest reliability study published July 7 in Sleep. While quantitative EEG features showed the highest reproducibility overall, they […]

Actigraphy, the simple wrist-worn monitoring of rest-activity cycles, combined with a specialized AI transformer model can distinguish Parkinson’s disease patients from healthy controls with over 93% accuracy and identify those with concurrent REM sleep behavior disorder with over 95% accuracy, according to a study published July 7 in the Journal of Sleep Research. The findings […]

A new animal study from researchers at Ibn Tofail University in Morocco provides a detailed look at how prolonged REM sleep deprivation damages the body’s ability to regulate blood sugar, pointing to oxidative stress and tissue damage as key mechanisms linking chronic sleep loss to type 2 diabetes. The findings, published July 7 in _Sleep […]

The choroid plexus may be a missing link connecting poor sleep to brain aging Poor sleep is a well-known risk factor for cognitive decline and Alzheimer’s disease, but the biological mechanisms have remained frustratingly unclear. Now, a large new study points to an unexpected culprit: the choroid plexus, a little-known structure deep within the brain […]

Are there sex differences in the influence of insomnia symptoms and sleep duration on the trajectory of neuromuscular strength decline? A new longitudinal analysis of more than 6,400 older adults reveals that poor sleep does not weaken muscles equally in men and women, insomnia accelerates strength loss in men, while sleeping too long does the […]

A new pooled analysis of two randomized controlled trials provides the strongest causal evidence to date that chronically sleeping less than one’s body needs may directly lead to weight gain. Adults who cut their sleep by roughly 78 minutes per night for six weeks gained nearly half a kilogram in body weight and showed measurable […]

A new pooled analysis of two randomized controlled trials provides the strongest causal evidence to date that chronically sleeping less than one’s body needs may directly lead to weight gain. Adults who cut their sleep by roughly 78 minutes per night for six weeks gained nearly half a kilogram in body weight and showed measurable […]

Are there sex differences in the influence of insomnia symptoms and sleep duration on the trajectory of neuromuscular strength decline? A new longitudinal analysis of more than 6,400 older adults reveals that poor sleep does not weaken muscles equally in men and women, insomnia accelerates strength loss in men, while sleeping too long does the […]

Mobile health applications for sleep are now used by millions of consumers worldwide, yet the evidence base supporting their accuracy and clinical utility remains alarmingly thin. A new commentary published in Sleep argues that the field of digital sleep health must confront this gap before consumer-facing tools can be meaningfully integrated into clinical practice. (brief) […]