Why your body’s internal clock affects how you handle stress
Interaction between circadian rhythms and stress
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Your body has a clock that tells it when to be awake and asleep, and this clock also controls how much stress hormone you release. At night (for mice), the clock makes stress hormones spike higher and blocks the body from calming down, but if the clock gets messed up by jet lag or late-night eating, stress hormones stay too high and hurt your health.
Surprising Findings
Glucocorticoids aren’t just stress hormones — they’re clock synchronizers.
Most people think cortisol is just a 'stress chemical,' but this study shows it actively resets peripheral clocks — meaning stress doesn’t just disrupt your rhythm, it *reprograms* it.
Practical Takeaways
Avoid eating within 3 hours of bedtime to prevent peripheral clock misalignment.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Your body has a clock that tells it when to be awake and asleep, and this clock also controls how much stress hormone you release. At night (for mice), the clock makes stress hormones spike higher and blocks the body from calming down, but if the clock gets messed up by jet lag or late-night eating, stress hormones stay too high and hurt your health.
Surprising Findings
Glucocorticoids aren’t just stress hormones — they’re clock synchronizers.
Most people think cortisol is just a 'stress chemical,' but this study shows it actively resets peripheral clocks — meaning stress doesn’t just disrupt your rhythm, it *reprograms* it.
Practical Takeaways
Avoid eating within 3 hours of bedtime to prevent peripheral clock misalignment.
Publication
Journal
Neurobiology of Stress
Year
2016
Authors
C. Koch, Brinja Leinweber, B. C. Drengberg, C. Blaum, H. Oster
Related Content
Claims (3)
When your body's internal clock is out of sync—like from shift work or jet lag—it messes up your stress hormones, stops your sleep hormone from working right, and turns on inflammation in the same way that being tired or stressed for a long time does.
When animals like mice or rats have their sleep-wake cycles messed up for a long time—like from constant light or frequent time zone changes—it messes up their stress hormones, makes them less able to handle sudden stress, and leads to problems like weight gain, mood issues, and aging faster.
Female rodents respond to stress differently than males—they produce more stress hormones, their brains react more strongly, and they're more likely to show signs of depression-like behavior. But most science studies only use male rodents, so we don't know if the results apply to females.