The mind/body is one paradigm, however, it is not the only plausible paradigm - what it boils down to is bio-politics and "according to whom." A thorough reading of the scientific biomedical literature reveals plenty of objective biomedical evidence for all the organic diseases referenced in this book.
For example, ME/CFS is an organic brain disease (ICD-10 G93.3) where patients suffer from pathological exhaustion - not garden variety tiredness - among many other neurological symptoms and signs. And fibromyalgia is classified under musculoskeletal diseases not memes. Three different subgroups of veterans with GWS have been objectively identified although there is no current diagnostic category.
These diseases are no more or less mysterious than Parkinson's disease, ALS, Huntington's disease, Multiple Sclerosis, SLE, migraines, diabetes or Alzheimer's Disease. Given the dearth of adequate funding in these areas, there is surprisingly a great deal of evidence supporting biomarkers, non-psychogenic genetic considerations, and objective neurological signs which are significant even when there is no "known" pattern as well. There are also biomedical patterns consistent with both toxic and microbial exposure.
As for psychiatric disorders there is no known cause, no objective biomarkers, and the hypothetical symptoms are often confused with medical symptoms - in short a complete mystery.
Like many less than transparent health advocacy journalists, Mr. Wheelwright fails to rigorously examine the unproven hypotheses of psychiatrists (and disability insurance conglomerates) hoping to expand their influence and profit by expanding the boundaries of psychosomatic medicine in the DSM-V and the ICD-11.
The inadequate and inappropriate methodological methods of this small, but well funded group of Neo-Freudian adherents have come under heavy fire from their peers both in psychiatry and epidemiology as well as the biomedical fields. A good reporter using objective methods would have caught that. It is unfortunate that patients are caught in the cross-fire of murky reporting.