Fairly obvious if you look enough at the research
mitochondrial disease patients rarely get diagnosed as adults and they often suffer a lot of complications unnecessarily as a result
Our medical system is awful at dealing with it - chronic stress and anxiety are certainly related to metabolic disturbances as well according to research so that makes it an easy target for doctors to "explain away".
also antibiotics cause mitochondrial dysfunction (particularly bacteriocidal antibiotics)
chronic stress and sleep deprivation "raise your susceptibilty" to chronic fatigue and fibromyalgia - yeah becuase they lead to excess oxidative stress
CFS patients are probably surgery risks as well then since propofol and the like inhibit mitochondria