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Weight and sleep health in OSA: exploring their link
Caroline J Beatty1,2, Shane A Landry1,2, Dwayne L Mann1,3
1Department of Physiology, Biomedicine Discovery Institute, Monash University, Melbourne, VIC, Australia.
Frontiers in Sleep
|June 3, 2026
Summary
Higher body weight is linked to irregular sleep in individuals with obstructive sleep apnea (OSA). However, weight loss did not improve sleep regularity in this study group.
Area of Science:
- Sleep Medicine
- Obesity Research
- Cardiorespiratory Sleep Physiology
Background:
- Obesity is a significant risk factor for obstructive sleep apnea (OSA).
- Weight loss is recommended for managing OSA, but it is challenging for individuals with obesity.
- The relationship between weight changes and sleep health in OSA patients requires further investigation.
Purpose of the Study:
- To investigate the association between body weight, weight change, and sleep health in patients with OSA.
- To determine if weight loss interventions improve sleep parameters in individuals with OSA.
Main Methods:
- Analysis of sleep data from 28 participants newly diagnosed with OSA over 12 months.
- A 6-month weight-loss intervention was implemented using a step-wedge design.
- Sleep duration, regularity, and efficiency were measured using Fitbit data.
- Linear mixed-effects models were employed to assess the relationship between sleep variables and weight/weight change.
Main Results:
- Participants were middle-aged with obesity and severe OSA.
- Higher body weight was significantly associated with increased sleep irregularity (p=0.002).
- No significant association was found between weight change and improvements in sleep duration, efficiency, or regularity.
Conclusions:
- Elevated body weight is linked to poorer sleep regularity in individuals with OSA.
- Weight loss interventions may not directly improve sleep regularity in this population.
- The complex relationship between weight and sleep in OSA warrants further research.
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