Gut <-> Stress <-> Sleep
Gut, Stress & Circadian Rhythms: A Delicate Dance
Your gut microbes aren't just digesting your dinner—they're setting your stress thermostat, too. A new study in Cell Metabolism shows that gut microbiota influence our response to stress by regulating circadian rhythms and HPA axis function. When researchers depleted microbes in mice, it disrupted the brain's stress response patterns and led to time-of-day-specific impairments in behavior and cortisol regulation.
Even more fascinating: transplanting certain microbes restored rhythmicity, pointing to species like L. reuteri as key players. From the gut-brain axis to cortisol rhythms, this study highlights just how integrated our internal clocks and microbial residents are—and why restoring microbial balance is crucial for stress resilience.