Research

Energy balance

Short sleep duration negatively impacts the efficacy of weight loss interventions, resulting in less fat mass loss and greater weight regain after bariatric surgery compared to adequate sleep.

If you are trying to lose weight, prioritize getting enough sleep. Short sleepers lose less fat mass during a diet and are more likely to regain weight after bariatric surgery. Ensuring 7-8 hours of sleep can enhance the effectiveness of your weight loss efforts.

ModerateSupportsMEDIUM confidence
In addition, people with short sleep duration or poor sleep quality lost less fat mass, while having a 600 kcal restricted diet during a longitudinal study over 24 weeks (Chaput & Tremblay 2012). For each additional hour of sleep, fat loss increased by 0.77% or 0.72 kg.
Christina Antza et al. · Journal of Endocrinology · 2021

Why this rating

Based on a small longitudinal study (n=not specified but described as 'small') and a small pilot study (n=14), indicating lower evidence strength than the cohort meta-analyses.

Source

The links between sleep duration, obesity and type 2 diabetes mellitus

Christina Antza et al. · Journal of Endocrinology · 2021

DOI 10.1530/joe-21-0155

narrative_reviewCited 262×
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DOI resolved against Crossref · corpus check 2026-06-10

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