I was diagnosed with CFS/ME (by GP and a specialist CFS/ME clinic) and have made a gradual recovery to almost perfect health. I believe that breaking the vicious cycle ... talks about is absolutely crucial to recovery. This does not mean that symptoms are not real: they are utterly debilitating real physical symptoms. But I believe there is a real psychological element involved in this: for me, the more I pondered and dwelled on how much CFS was ruining my life, and preventing me from doing things, the worse I got. My health began to return when I accepted that a lot of my beliefs about CFS/ME were faulty: this didn't mean pushing through bouts of severe tiredness (guaranteed to make things worse) or trying to exercise my way back to health (ditto), but also managing my energy levels. ME/CFS is complex and misunderstood because it doesn't fit snugly into either a physical illness or psychological illness category. Many studies that look into the physical effect of CFS/ME will show that the body is under, or has been under stress e.g HPA axis dysfunction etc. What further confuses things is that there may be a physical trigger (bacteria, virus like Covid etc that overloads the immune system initially). More research is definitely welcome to bring together a holistic understanding of mind and body so that we can finally wave goodby to the purely medical and unhelpful "It's all in the mind" view - as well as the "CFS/ME is a purely physical illness that science has not yet solved" camp. Both are, in my view, harmful attitudes.