# Global pediatric sleep deprivation concerns > Live situation record from CLSTR: https://clstr.news/situations/global-pediatric-sleep-deprivation-concerns > Updated: 2026-10-13T10:48:48.000Z. Sources: 6. Developments: 2. Medical experts and health organizations are raising alarms regarding sleep deprivation in children and adolescents. In Hungary, data from the Health Behaviour in School-aged Children study, conducted with the World Health Organization, indicates that students are not meeting recommended sleep durations. As students age, sleep duration decreases, with eleventh graders averaging only 7.09 hours. This has resulted in 57.3 percent of students reporting “intense fatigue several times a week,” which may impair concentration and academic performance. In Brazil, the Brazilian Society of Pediatrics has issued alerts noting that fatigue in children often manifests as hyperactivity, irritability, and decreased school performance rather than lethargy. To combat these issues, experts recommend specific sleep windows—9 to 12 hours for children aged 6 to 12, and 8 to 10 hours for adolescents—while advising that electronic devices be turned off at least one hour before bedtime to prevent interference with relaxation. ## Timeline ### 2026-10-13: Brazilian Society of Pediatrics warns of sleep deprivation risks in children The Brazilian Society of Pediatrics warns that sleep deprivation in children can manifest as hyperactivity and irritability rather than lethargy, affecting school performance and focus. 2 sources. https://clstr.news/cluster/brazilian-society-of-pediatrics-warns-of-sleep-deprivation-risks-in-children ### 2026-09-14: Student health: Sleep deprivation and activity levels at school start Following the start of the school year, research highlights significant sleep deprivation among Hungarian students and emphasizes the need for regular physical activity and gradual routine adjustments. 4 sources. https://clstr.news/cluster/student-health-sleep-deprivation-and-activity-levels-at-school-start --- Cite as: Global pediatric sleep deprivation concerns. CLSTR, https://clstr.news/situations/global-pediatric-sleep-deprivation-concerns