Sleep

A new review published in Ageing Research Reviews synthesizes the evidence linking four modifiable lifestyle factors, nutrition, exercise, gut microbiota, and sleep, to brain health across the lifespan, offering a framework for delaying neurodegenerative disease through daily behavioral choices. Led by Andrew C. Shin of Texas Tech University, the review draws on original research and […]

Chronic caffeine treatment preserves memory, mood, and neuronal architecture in rats subjected to five weeks of REM sleep deprivation, according to a study published July 7 in Scientific Reports. Researchers at Ibn Tofail University in Morocco used the Modified Multiple Platform Method to induce REM sleep deprivation in rats for five weeks, then assessed the […]

Cardiorespiratory Sleep Staging Hits 70% Accuracy but Faces N1 Blind Spot and Validation Gap, Systematic Review Finds Date: 2026-07-08 Automatic sleep staging using only cardiorespiratory signals — derived from wearable sensors rather than full electroencephalography — achieves a practically meaningful accuracy of approximately 70%, but the field faces systematic shortcomings that limit clinical deployment, according […]

An AI-driven mobile app designed to improve sleep habits in young Japanese children achieved 94% sustained engagement over six months with zero dropouts, and significantly reduced night-waking and improved subjective sleep quality, according to a feasibility study published June 23 in Frontiers in Sleep. The app, called Nenne Navi-AI, combines supervised machine learning models with […]

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 […]