Restricted sleep altered daily rhythms of blood metabolites linked to gut microbes
A small laboratory crossover trial found altered blood-metabolite patterns after short sleep under controlled meal conditions. Clinical outcomes are not reported in the abstract.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
Short sleep altered the composition and daily rhythms of circulating metabolites, including compounds linked to gut microbes. Some rhythms disappeared while others emerged despite controlled meals. These blood-pattern changes suggest an effect of sleep restriction, but they do not establish a clinical consequence or show whether altered rhythms persist after normal sleep resumes.
The experiment involved few participants and brief sleep restriction. Abstract-only access cannot establish the clinical meaning of altered metabolite rhythms or how the findings apply to longer periods of restricted sleep.
What researchers found
Blood butyrate rhythm
Restricted versus normal sleep after 3 nights per condition; assessed across 24-hour blood sampling. The abstract does not quantify the size of this rhythm change.
How sleep was compared
Each participant completed both sleep conditions, allowing comparison within the same person. Researchers kept meal timing and calorie intake constant, then sampled blood across the day to assess metabolite composition and rhythmicity.
Daily patterns in metabolite levels
Many metabolites kept their daily rhythms, while some lost detectable rhythms and others gained them. Butyrate lost its rhythm, whereas kynurenine developed one. These findings describe patterns in metabolite levels across the day.
The original publication
Short-term sleep restriction in humans alters diurnal circulating metabolite profiles, including those of microbial origin.
Leone VA, Frazier K, Kaur M et al.
J Clin Invest · 2026
- PubMed ID
- 41837293
- Record checked
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