Mental Health DailyResearch. Evidence. Perspective.Published research on sleep duration.
High-school students in Vietnam who slept worse reported slightly lower grades, according to a 2026 survey of 541 students in Grades 10 and 11. Shorter sleep carried most of that link, which…
Read articleLow-burden digital phenotyping is appealing because college students already leave daily traces in phones, messages, sleep logs, and voice samples. In Henry et al.’s 120-student study, posit…
Read articleA 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 smal…
Read articleA 2026 multi-ancestry genome-wide association study of urinary aMT6s, a melatonin metabolite used as a proxy for overnight melatonin secretion, found 0 genome-wide significant loci in 11,744…
Read articleA 2026 cross-sectional study involving 428 employed adults found that poor sleepers reported a median 292.8 mg/day of caffeine, compared with 176.1 mg/day among good sleepers, and total caff…
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