Why do some people with chronic fatigue or fibromyalgia have low stress hormone levels?

Original Title

The hypothalamo–pituitary–adrenal axis in chronic fatigue syndrome and fibromyalgia syndrome

Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms

Summary

Some people with chronic fatigue or fibromyalgia have lower levels of stress hormones. This isn't because their hormone-making parts are broken, but because their body may have changed how it handles long-term stress.

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Surprising Findings

Low cortisol in chronic fatigue and fibromyalgia may be an adaptive response, not a defect.

Most people assume low hormone levels mean something is broken, but this suggests the body is actively adjusting to survive long-term stress—like a thermostat recalibrating.

Practical Takeaways

Consider that chronic fatigue or pain might reflect a body overwhelmed by long-term stress, not a failing organ system.

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