Placebo effect has links to religious belief, in terms of processes - can't for the life of me remember where I read or heard that.
But clearly believing something can help you has the power to change perspective and improve wellbeing and even sometimes physical pain without physically affecting your body.
There's a common shoulder surgery that's been shown to be no better than a placebo.
A lot is talked about post surgery euphoria etc. and then follow ups drift off and don't capture the possible regret that can occur years later.
There are certainly 'acceptable diseases' in society and ones that aren't as 'cheered on.' Some have a stigma around them. Trans is a condition that is now very celebrated but has a wooly diagnosis (or none) so is 'open access.'
It's a magnet for other mental health conditions. The mental condition is now physically treated. Which has symbolism, you're physically being cared for and issued medicine. People care.