Preschool Sleep Under 9 Hours Linked to Anxiety in 1,589 Children
A 2026 Shanghai study of 1,589 preschoolers found that children sleeping ≤9 hours at night had higher parent-rated anxiety scores than children sleeping >10 hours. The effect sizes were small, but the pattern appeared across total anxiety, physical injury fears, social phobia, obsessive-compulsive symptoms, and generalized anxiety symptoms.1 Research Highlights 1,589 preschoolers were analyzed: Zhang …