Differences in adrenal steroid profile in chronic fatigue syndrome, in depression and in health.
Scott, L V, Salahuddin, F, Cooney, J et al. · Journal of affective disorders · 1999 · DOI
Quick Summary
This study measured several hormones related to stress in people with ME/CFS, depression, and healthy individuals. Researchers found that people with ME/CFS had significantly lower levels of DHEA and DHEA-S (hormones produced by the adrenal glands) compared to healthy people, while cortisol levels were similar across all groups. This suggests ME/CFS may involve a different hormone pattern than depression, and DHEA could potentially help diagnose or treat ME/CFS.
Why It Matters
This research identifies a potential biochemical signature of ME/CFS—specifically low DHEA and DHEA-S—that distinguishes it from major depression and healthy controls. Understanding these hormone abnormalities could lead to diagnostic biomarkers and new treatment approaches targeting adrenal function in ME/CFS.
Observed Findings
DHEA levels were significantly lower in CFS patients compared to healthy controls
DHEA-S levels were significantly lower in CFS patients compared to healthy controls
DHEA-S (but not DHEA) was significantly lower in depression patients compared to healthy controls
Cortisol levels showed no significant differences between CFS, depression, and healthy groups
17-alpha-hydroxyprogesterone levels did not differ significantly between the three groups
Inferred Conclusions
CFS demonstrates a distinctive adrenal steroid profile characterized by low androgens, suggesting HPA axis hypoactivity patterns distinct from major depression
DHEA and DHEA-S may serve as potential diagnostic biomarkers for ME/CFS
Therapeutic intervention targeting DHEA supplementation warrants further investigation in CFS
Remaining Questions
Does DHEA supplementation improve symptoms or function in ME/CFS patients, and at what doses?
Are the low DHEA/DHEA-S levels a primary cause of ME/CFS or a consequence of the illness?
How do these adrenal hormone patterns change over time, and do they correlate with symptom severity or disease progression?
What This Study Does Not Prove
This study does not prove that low DHEA causes ME/CFS or that DHEA replacement will treat the condition. The cross-sectional design cannot establish causality. The small sample size (15 CFS patients) limits generalizability, and the findings need replication in larger, longitudinal studies before clinical use is recommended.