New Study Finds Sex Differences in Sleep Patterns

Research suggests men and women may need different strategies to improve sleep efficiency and nighttime rest.

Updated on Oct. 21, 2026 in Sleep Disorders

Gouache-painted illustration of two overlapping, distinct crescent shapes representing rest cycles in sage and dusty rose, set against a dark void. — Researchers found distinct sex-based differences in sleep patterns, suggesting clinical sleep hygiene recommendations may need to be tailored accordingly. AI Illustration. Upload story photo >

Live Poll

Do you believe you need exactly eight hours of sleep to feel fully refreshed?

Researchers identified distinct sex-based differences in sleep patterns and habits among 270 individuals in the Military Health System. The study highlights variations in how men and women experience sleep, including differences in how long it takes to fall asleep and overall sleep efficiency.

Why it matters

Understanding these differences helps clinicians tailor sleep hygiene recommendations to the specific needs of their patients. By identifying variations in sleep latency and efficiency, healthcare providers can better address the unique challenges individuals face when trying to get a restful night.

This observational study of 270 participants (mean age 45.8) utilized 10 days of objective Fitbit tracking to measure sleep architecture. Researchers found females had a longer sleep onset latency (35.2 vs. 24.4 minutes) and lower sleep efficiency (82.0% vs. 87.0%) compared to their male counterparts.

The players

Walter Reed National Military Medical Center

A major military medical center that served as a recruitment site for the sleep study.

Alexander T. Augusta Military Medical Center

A military medical facility that participated as a recruitment site for the research.

The details

Participants used wearable Fitbit trackers and kept daily smartphone diaries to record their sleep patterns, which were then adjusted for factors like depression, anxiety, age, and race. The data showed that while females had a higher objective total sleep duration of 6.4 hours compared to 5.9 hours for males, they reported higher rates of intrusive thoughts at night. Additionally, females were more likely to express beliefs that exactly 8 hours of sleep are required to feel refreshed.

Participants underwent a 10-day monitoring period to track their sleep and activity.

Health Landscape

This study contributes to the Military Health System's wellness initiatives by highlighting sex-specific sleep patterns that require tailored clinical attention. It marks a shift toward more personalized sleep medicine by acknowledging that standard sleep duration goals may not fit all patients equally.

If you notice that you are struggling to fall asleep or feeling overwhelmed by thoughts at night, consider discussing these patterns with your primary care provider. These findings suggest that individual sleep efficiency can vary widely, and your personal needs may not align with the standard recommendation of eight hours.

The takeaway

While healthy sleep is vital, individual experiences with falling and staying asleep are nuanced and influenced by gendered patterns. If your sleep quality consistently feels low, talk to your doctor about screening for underlying factors beyond just duration that might be impacting your rest.