Gardner, Ann, Boles, Richard G · Progress in neuro-psychopharmacology & biological psychiatry · 2011 · DOI
For decades, doctors believed depression was caused by low serotonin levels in the brain, but research hasn't proven this is true. This review proposes that depression and related conditions like ME/CFS, fibromyalgia, and IBS may actually stem from problems with how cells produce energy (mitochondrial dysfunction) combined with inflammation in the body. The authors suggest that common depression medications work through multiple pathways—not just serotonin—and that targeting mitochondrial health might help treat these overlapping conditions.
This work is significant for ME/CFS patients because it positions ME/CFS within a broader framework of affective spectrum disorders with shared biological mechanisms—particularly mitochondrial dysfunction and inflammation—rather than viewing it as purely psychiatric. The proposed model suggests that treatments targeting energy metabolism and immune dysregulation, rather than only serotonin, may be more effective for ME/CFS and related conditions, potentially opening new therapeutic avenues.
This is a mechanistic review synthesizing existing literature, not a primary research study, so it does not present new experimental data or prove causation. The paper does not establish whether mitochondrial dysfunction or inflammation is primary or secondary in ME/CFS pathogenesis. The review also does not validate specific mitochondrial-targeted treatments in ME/CFS patient populations or demonstrate superiority over existing approaches.
About the PEM badge: “PEM required” means post-exertional malaise was an explicit required diagnostic criterion for participant inclusion in this study — not that PEM was studied, observed, or discussed. Studies using criteria that do not require PEM (e.g. Fukuda, Oxford) are tagged “PEM not required”. How the atlas works →
Spotted an error in this entry? Report it →