BMI, Sleep Architecture, and Glucose Metabolism: Insights From the Baependi Heart Study
Authors' conclusion
After exclusion of participants with moderate-severe sleep apnea, there was no difference in non-REM sleep and only a small difference in REM sleep between BMI groups, suggesting that BMI does not substantially impair sleep unless sleep apnea is present.
Study context
- Population
- Adults in the Baependi Heart Study, excluding moderate-severe sleep apnea and diabetes-related medication
- Participants
- 1,014 adults
- Exposure
- BMI groups: ≥ 30 and 25 to < 30 vs 18.5 to < 25 kg/m²
- Outcome
- Sleep architecture by BMI group
Methodological detailsfamily-based observational study, at-home polysomnography
- Family-based observational study
- At-home polysomnography
Main finding
As reported in the abstract
Difference in REM sleep
−7.8 min
P = 0.003
BMI ≥ 30 · less REM sleep with BMI ≥ 30
Difference in apnea-hypopnea index
0.8 events per hour
P < =0.002
BMI 25 to < 30
Difference in apnea-hypopnea index
1.4 events per hour
P < =0.002
BMI ≥ 30
Observational data: associations, not effects.
Further findings
- Wake after sleep onset (WASO) associated with higher fasting glucose in BMI ≥ 30 only; 10 min more WASO with ≈1% higher fasting glucose (p = 0.002)
Original publication
BMI, Sleep Architecture, and Glucose Metabolism: Insights From the Baependi Heart Study. Obesity (Silver Spring). Published 30 July 2025. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →