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Study Links Gut Microbes to Sleep and Brain Health

10/6/2025

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Summary

Story summary

Gut-derived peptidoglycan fragments may influence sleep by altering brain peptidoglycan levels across the day.
In mice, sleep deprivation altered peptidoglycan levels, suggesting a gut–sleep connection.
Researchers propose a "holobiont condition" of sleep, in which microbes and the brain work together.
Microbial communities are linked to insomnia and neurodegenerative diseases, underscoring their health role.
Findings were published in Frontiers in Neuroscience.

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Story summary

Gut-derived peptidoglycan fragments may influence sleep by altering brain peptidoglycan levels across the day.
In mice, sleep deprivation altered peptidoglycan levels, suggesting a gut–sleep connection.
Researchers propose a "holobiont condition" of sleep, in which microbes and the brain work together.
Microbial communities are linked to insomnia and neurodegenerative diseases, underscoring their health role.
Findings were published in Frontiers in Neuroscience.