https://medicalxpress.com/sleep-medicine-news/ en-us Latest medical news and research in Sleep medicine For nearly 25 years, scientists believed they knew what caused the most severe form of narcolepsy. A new UCLA Health study now suggests they were only half correct. In a study published in Nature Communications, UCLA Health researchers have discovered that narcolepsy with sudden loss of muscle strength, known as cataplexy, involves degeneration of neurons in not one, but two regions of the brain. https://medicalxpress.com/news/2026-04-severe-narcolepsy-brain-region.html Thu, 30 Apr 2026 16:30:01 EDT news696784801 A randomized controlled trial evaluating the safety and efficacy of proximal hypoglossal nerve stimulation, or pHGNS, (an implanted stimulation therapy targeting specific sectors of nerves in the tongue) for obstructive sleep apnea (OSA) found that pHGNS significantly reduced breathing interruptions during sleep and improved patient-reported daytime sleepiness without any significant adverse events. The study is published in Annals of Internal Medicine. https://medicalxpress.com/news/2026-04-implanted-nerve-obstructive-apnea-safe.html Mon, 20 Apr 2026 17:00:02 EDT news695893982 A new study from Ben-Gurion University of the Negev and Soroka University Medical Center, published in Sleep and Breathing, reveals a significant link between obstructive sleep apnea and skeletal muscle quality. This finding may indicate an increased risk of muscle deterioration with aging, something many of us are unaware of. https://medicalxpress.com/news/2026-04-obstructive-apnea-linked-poorer-muscle.html Mon, 20 Apr 2026 15:20:02 EDT news695916541 Melatonin is a naturally produced molecule that has long been suspected to play a role in healthy sleep, but it has been unclear how it does so. Now, Caltech researchers have discovered a mechanism through which melatonin promotes sleep, using zebrafish models in the laboratory. The research was conducted in the lab of Professor of Biology David Prober and is described in a paper published in Current Biology. https://medicalxpress.com/news/2026-04-melatonin-visual-sensitivity-zebrafish.html Mon, 20 Apr 2026 13:20:04 EDT news695909041 New research reveals that as people age, naps may be an easily trackable warning sign of underlying conditions or declining health. A new study by investigators from Mass General Brigham and Rush University Medical Center followed 1,338 older adults for up to 19 years to track napping habits and associated mortality rates. They found longer, more frequent, and morning naps were associated with higher mortality rates. https://medicalxpress.com/news/2026-04-daytime-napping-patterns-reveal-hidden.html Mon, 20 Apr 2026 11:40:07 EDT news695902321 Research from the University of Oklahoma and the University of Tulsa proposes a new model to explain why nightmares can persist over time in children and how therapy can be designed to break that cycle. https://medicalxpress.com/news/2026-04-nightmares-persist-children.html Fri, 10 Apr 2026 07:00:01 EDT news695015521 Mount Sinai researchers have created an analytic tool using machine learning that can predict cardiovascular disease risk in millions of patients with obstructive sleep apnea, a serious sleep disorder, according to findings recently published in Communications Medicine. The team said their study is the first to provide estimates of whether continuous positive airway pressure (CPAP), a widely used therapy for obstructive sleep apnea, will increase or decrease an individual's cardiovascular risk. It highlights the potential for precision medicine and varied approaches to tailor clinical care and reduce cardiovascular disease risk in vulnerable patients. https://medicalxpress.com/news/2026-04-ai-cpap-massively-heart-apnea.html Thu, 09 Apr 2026 17:40:03 EDT news694971481 Consumer wearables have become everyday tools for monitoring sleep and physical activity. Researchers at the Centre for Sleep and Cognition at the NUS Yong Loo Lin School of Medicine (NUS Medicine) have now shown that their capabilities may extend further: pulse signals recorded overnight carry enough information to estimate vascular age, a key indicator of cardiovascular health. https://medicalxpress.com/news/2026-04-wearable-cardiovascular-health.html Wed, 08 Apr 2026 11:40:04 EDT news694866181 Organoids are miniature, simplified versions of an organ. Over the past two decades, scientists have developed them for the gut, lung, liver, mammary gland, brain, and more. Now, researchers at Yale School of Medicine (YSM) have organoid-ized the pineal gland, a small structure in the brain that regulates sleep patterns through its production of the hormone melatonin. https://medicalxpress.com/news/2026-04-lab-grown-pineal-gland-organoids.html Wed, 08 Apr 2026 10:40:01 EDT news694860494 People whose sleep apnea changes dramatically from night to night are 30% more likely to have a heart attack, stroke, or heart failure, reveals a new study from Flinders University. The research, published in the journal SLEEP, shows that it is not just how severe sleep apnea is that matters, but how much it fluctuates, with wide night-to-night swings in breathing problems during sleep linked to a higher risk of serious heart disease. https://medicalxpress.com/news/2026-04-patterns-reveal-hidden-heart.html Tue, 07 Apr 2026 11:20:06 EDT news694776661 A research team at Charité–Universitätsmedizin Berlin has developed a test that can determine a person's chronotype based on their hair roots. It is intended to lay the foundation for circadian medicine—that is, medicine that is more closely aligned with the human body's internal clock. Applied to approximately 4,000 people, the new method also reveals that women and men differ slightly in their biological rhythms, and that lifestyle has a greater influence than previously assumed. The results have now been published in the journal Proceedings of the National Academy of Sciences. https://medicalxpress.com/news/2026-04-body-internal-clock-hair-sample.html Wed, 01 Apr 2026 13:20:02 EDT news694264381 Electrical signals from the brain could help identify potential issues in the organ's development, a new study reports. Scientists from the University of Fribourg in Switzerland and the University of Surrey investigated electrical activity in the brains of sleeping infants longitudinally, at ages 3 and 6 months. They examined three electrical signals with distinct frequencies: slow wave activity (0.75–4.25 Hz), theta (4.5–7.5 Hz) power and sigma (9.75–14.75 Hz) power, which are key markers of sleep depth and brain development. https://medicalxpress.com/news/2026-03-eeg-reveals-infant-brain-rhythms.html Mon, 30 Mar 2026 19:40:04 EDT news694102986 Our date of birth doesn't always match the age of our brain. How old our brain really is depends on our biological age, shaped by the wear and tear our cells experience over time. Genetics, environmental factors, and lifestyle choices all play a role in shaping how young or old our body's components are. A biological age higher than your actual chronological age can signal an increased risk of age-related diseases and health problems. https://medicalxpress.com/news/2026-03-subtle-brainwave-patterns-eeg-dementia.html Sun, 29 Mar 2026 13:00:01 EDT news693652249 When people think about ways to improve cardiovascular health, diet and exercise are often at the top of the list. But long-term health, especially in adolescents, might start with something more fundamental: sleep. A new study, led by a team from Penn State College of Medicine, has found that when teenagers go to sleep and when they wake up may be the driving force behind what teenagers eat and how much they move. https://medicalxpress.com/news/2026-03-teens.html Thu, 26 Mar 2026 18:40:04 EDT news693763081 Ahead of the beginning of Daylight Saving Time (DST) on 29 March, a comprehensive international review by researchers at the University of Kent has highlighted the complex arguments for and against scrapping the twice-yearly clock change, and the need for more evidence before a decision can be made. Calls to scrap Daylight Saving Time have intensified in recent years with campaigners often emphasizing the negative consequences it has on public health and well-being in the UK. However, a review of 157 studies from 36 countries led by the Medway School of Pharmacy in partnership with researchers at the University of Cologne suggests that this simple messaging can be misleading. https://medicalxpress.com/news/2026-03-scrap-daylight.html Tue, 24 Mar 2026 23:00:01 EDT news693581093 Researchers at the Yong Loo Lin School of Medicine, National University of Singapore (NUS Medicine), have demonstrated that caffeine can restore social memory impaired by sleep deprivation by targeting a defined brain pathway. Social memory enables us to recognize and differentiate familiar individuals, such as people we have met before. https://medicalxpress.com/news/2026-03-caffeine-memory-function-loss.html Tue, 24 Mar 2026 10:20:01 EDT news693564572 Children who use social media for more than three hours per day are more likely to develop greater levels of depression and anxiety compared to those who use it more moderately. The findings are the latest analysis to come from the SCAMP study, led by public health researchers at Imperial College London and based on data from more than 2300 children in schools across London. https://medicalxpress.com/news/2026-03-children-social-media-linked-depression.html Mon, 23 Mar 2026 11:20:05 EDT news693482643