Adequate sleep (6-8 hours/night) is associated with reduced risk of weight regain after a low-carbohydrate diet in individuals with overweight or obesity.
In a retrospective cohort study of 294 adults with overweight or obesity who underwent a low-carbohydrate diet intervention, 52% regained weight over an average follow-up of 36.7 months. Adequate sleep of 6-8 hours per night was associated with a significantly lower odds of weight regain (OR=0.15-0.16, p<0.05), while a family history of obesity increased risk (OR=2.36-2.84, p<0.01).
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Adequate sleep (6-8 hours/night) is associated with reduced risk of weight regain after a low-carbohydrate diet in individuals with overweight or obesity. The current body of evidence comprises 1 study. EvidenceHub rates the overall confidence at 34/100 (low).
The Claim
Adequate sleep (6-8 hours/night) is associated with reduced risk of weight regain after a low-carbohydrate diet in individuals with overweight or obesity.
This conclusion is most relevant to: Adults with overweight or obesity (BMI ≥24 kg/m²) who underwent an LCD in a hospital-based weight management program..
What the Research Shows
The conclusion draws on 1 linked study. Highlights from the cited literature:
- ▸Long-term weight maintenance after a low-carbohydrate diet: a real-world retrospective cohort study. (European journal of clinical nutrition, 2026) —
How It Works
The proposed biological pathway:
- ▸Adequate sleep may regulate appetite hormones (e.g., ghrelin, leptin), reducing hunger and caloric intake.
- ▸Better sleep may improve adherence to dietary and lifestyle modifications.
- ▸Sleep may influence metabolic rate and energy expenditure.
- ▸Result: Reduced likelihood of weight regain.
Who Might Benefit
Evidence fit by population:
- ▸Adults with overweight or obesity (BMI ≥24 kg/m²) who underwent an LCD in a hospital-based weight management program.
Recommended Dose
N/A
Limitations & Caveats
Important context when interpreting this evidence:
- ▸Retrospective design, relying on medical records and self-reported follow-up data, which may introduce recall bias.
- ▸Observational nature cannot establish causality; confounding factors may not be fully adjusted.
- ▸Sleep duration was self-reported, not objectively measured.
- ▸Single-center study, limiting generalizability.
Frequently Asked Questions
What is the recommended sleep duration for weight maintenance after a low-carb diet?▼
The study suggests that sleeping 6-8 hours per night is associated with a lower risk of weight regain, with an odds ratio of 0.15-0.16 compared to shorter or longer sleep.
How much weight regain was observed in the study?▼
52% of participants regained at least 25% of their initial weight loss over an average follow-up of 36.7 months.
Does a family history of obesity affect weight maintenance?▼
Yes, a family history of obesity significantly increased the risk of weight regain (OR=2.36-2.84, p<0.01).
What was the duration of the low-carbohydrate diet intervention?▼
The average duration of the LCD intervention was 6.9 ± 4.2 weeks.
References
- 1.Ruan Y, Hu H, Cheng Q, Deng F, Lin P, Zhu T, Zhang Q, Chen H. “Long-term weight maintenance after a low-carbohydrate diet: a real-world retrospective cohort study..” European journal of clinical nutrition, 2026. PMID: 42668317 DOI: 10.1038/s41430-026-01815-1