Saheki, T · Nihon rinsho. Japanese journal of clinical medicine · 1999
Carnitine is a natural substance in the body that helps cells produce energy by breaking down fats. This review discusses how carnitine performs multiple important functions beyond energy production, including supporting brain health and helping the body eliminate waste products. The authors suggest carnitine may play a role in chronic fatigue syndrome and other conditions involving energy metabolism.
This study is relevant to ME/CFS because it directly addresses abnormal acetylcarnitine metabolism in the brains of people with chronic fatigue syndrome and proposes carnitine's role in energy metabolism and ammonia detoxification—two pathways implicated in ME/CFS pathophysiology. Understanding carnitine's multifaceted functions may explain why some patients report benefit from carnitine supplementation and could guide future therapeutic interventions targeting cellular energy production.
This review does not prove that carnitine deficiency causes ME/CFS or that carnitine supplementation will treat the condition. It does not establish causation between aberrant brain acetylcarnitine incorporation and ME/CFS symptoms, nor does it define the mechanisms by which carnitine supplementation may ameliorate hyperammonemia. The study provides no clinical trial data on efficacy or optimal dosing in ME/CFS patients.
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 →
The first block is for the primary paper and is the citation you should use in research work. The atlas-snapshot line only applies if you are specifically referring to this atlas’s reading of the paper on the date shown.
Primary citation
Saheki, T (1999). [Carnitine as a vitamin-like biofactor].. Nihon rinsho. Japanese journal of clinical medicine. https://pubmed.ncbi.nlm.nih.gov/10540873/
BibTeX
@article{mecfsatlas-saheki-1999-carnitine-vitamin,
author = {Saheki, T},
title = {[Carnitine as a vitamin-like biofactor].},
journal = {Nihon rinsho. Japanese journal of clinical medicine},
year = {1999},
note = {PubMed: 10540873},
url = {https://www.mecfsatlas.com/evidence/saheki-1999-carnitine-vitamin},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-27. https://www.mecfsatlas.com/evidence/saheki-1999-carnitine-vitamin
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