E3 PreliminaryPreliminaryPEM not requiredMechanisticPeer-reviewedReviewed
Red ginseng extract improves skeletal muscle energy metabolism and mitochondrial function in chronic fatigue mice.
Zhang, Haijing, Zhao, Chunhui, Hou, Jinli et al. · Frontiers in pharmacology · 2022 · DOI
Quick Summary
This study tested whether red ginseng extract could help mice with chronic fatigue by improving how their muscles produce energy. Researchers found that medium and high doses of red ginseng reduced markers of fatigue and improved the function of mitochondria (the "power plants" inside muscle cells), helping restore the muscle's ability to generate energy.
Why It Matters
ME/CFS is characterized by postexertional malaise and energy deficit at the cellular level. This mechanistic study identifies a potential botanical intervention that targets mitochondrial dysfunction and impaired ATP production—core pathophysiological features proposed in ME/CFS—providing pre-clinical rationale for further translational research.
Observed Findings
- Red ginseng extract at 400–600 mg/kg reduced skeletal muscle lactate, serum lactate dehydrogenase, and serum urea levels compared to controls
- Mitochondrial density, morphology, and membrane potential were restored in treated mice
- Enzyme activities of Na+-K+-ATPase and cytochrome c oxidase were increased in red ginseng-treated groups
- ATP levels and complex I expression were improved following treatment
- The AMPK/PGC-1α signaling cascade was activated in treated mice, promoting mitochondrial biogenesis
Inferred Conclusions
- Red ginseng extract exerts anti-fatigue effects through activation of the AMPK/PGC-1α pathway, which enhances mitochondrial biogenesis and function
- The mechanism involves reduced mitochondrial swelling, improved mitochondrial membrane integrity, and enhanced oxidative energy production
- Medium-to-high doses (400–600 mg/kg) are required to achieve significant improvements in mitochondrial parameters
Remaining Questions
- Do these findings translate to human ME/CFS patients, and what is the optimal dose for clinical application?
- Which bioactive compounds in red ginseng extract are responsible for the mitochondrial improvements?
What This Study Does Not Prove
This study does not prove red ginseng is effective in human ME/CFS patients; it only demonstrates mechanism of action in a mouse model of stress-induced fatigue. The chronic fatigue model used may not fully recapitulate ME/CFS pathophysiology, and results cannot be directly extrapolated to humans without clinical trials. Causation of fatigue improvement cannot be definitively attributed to any single pathway.
Tags
Symptom:Fatigue
Biomarker:MetabolomicsBlood Biomarker
Method Flag:PEM Not DefinedWeak Case DefinitionSmall SampleExploratory Only
Metadata
- DOI
- 10.3389/fphar.2022.1077249
- PMID
- 36618917
- Review status
- Editor reviewed
- Evidence level
- Early hypothesis, preprint, editorial, or weak support
- Last updated
- 12 April 2026
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 →
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