[monotone666]

Mitochondrial dysfunction is present in the vast majority of people with the condition.

[cpncrunch]

That hasn't been replicated yet, and even if it was it wouldn't prove that the cause isn't psychological.

https://www.sciencedirect.com/science/article/pii/S104327600...

"The exquisitely orchestrated adaptive response to stressors that challenge the homeostasis of the cell and organism involves important changes in mitochondrial function"