I believe you, but at the same time you have to take the correction for the fact that humans are storytelling creatures- we correlate our life experiences with our internal experience and spin them into stories by instinct- I've never met anyone who wasn't convinced their illness was related to life events and mindset for a long while before stumbling onto a diagnosis.

So I always wonder, are we seeing successful treatment of somatic complaints, or are we seeing regression to the mean spun into a story, or perhaps both?