Sleep Extension Improves Sleep Health but Not Insulin Sensitivity in People With Overweight or Obesity Who Maintain Habitual Short Sleep Schedules
Authors' conclusion
Extending sleep by ∼1 h/night for ∼6 weeks in people with overweight or obesity and short sleep schedules improves sleep health but not insulin sensitivity or glycemic control.
Study context
- Population
- People with overweight or obesity, insulin resistance and habitual short sleep schedules (<7 h/night)
- Participants
- 14 vs 15
- Comparison
- Extended sleep vs habitual sleep for ∼6 weeks
- Extended sleep (ES)n = 14
- Habitual sleep (HS)n = 15reference
- Primary endpoint
- Multiorgan (whole-body, hepatic, adipose tissue) insulin sensitivity by hyperinsulinemic-euglycemic clamp with tracer infusions
- Follow-up
- ∼6 weeks
Primary result
As reported in the abstract
Multiorgan insulin sensitivity
- No differences in multiorgan insulin sensitivity between groups
Further findings
Time in bed, increase · ∼6 weeks
Sleep duration, increase · ∼6 weeks
Time in bed, increase · ∼6 weeks
- Increased more with ES than HS
Sleep duration, increase · ∼6 weeks
- Increased more with ES than HS
Day-to-day sleep variability and subjective sleep health
- Improved more with ES than HS
Glycemic control (24-h serial plasma glucose and insulin)
- No differences between groups
Original publication
Sleep Extension Improves Sleep Health but Not Insulin Sensitivity in People With Overweight or Obesity Who Maintain Habitual Short Sleep Schedules. Diabetes Care. Published 21 January 2026. doi:10.
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