ME/CFS Research: Are We Searching for a Biomarker Before Establishing What We Are Actually Comparing?
After more than fifteen years of reading scientific literature on ME/CFS, I have once again come to question whether current research approaches can identify a reliable and reproducible biomarker for this condition. My skepticism does not arise from a belief that ME/CFS lacks a biological basis, nor from the assumption that science is incapable of identifying one. Rather, it arises from a fundamental concern about the assumptions underlying much of the research. Could the persistent failure to identify a reproducible ME/CFS biomarker result not primarily from technological limitations, but from the assumption that individuals sharing a clinical diagnosis necessarily share the same underlying biological pathology? Since 2010, I have examined scientific publications with several fundamental questions in mind. One question, in particular, remains insufficiently addressed: Why do so many studies compare biologically heterogeneous groups of patients diagnosed with ME/CFS against healthy ind...