Cohort Studyhigh evidence
Sleep Pattern Differences in Women at Midlife: A Large-Scale Multi-Country Smartwatch Study (SONAR).
Sleep·July 28, 2026·PMID 42518248
Why it mattersMidlife sleep fragmentation, particularly increased wakefulness after sleep onset, is a common but underrecognized issue in women that may affect daytime function, mood, and long-term health. Objective, large-scale wearable data can help clinicians identify this pattern and integrate sleep assessment into routine health counseling for women in this life stage.
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