Orgasm can only stabilize and correct the condition, it cannot completely heal. But I think that this case helps very well and it is better to get a portion of orgasm regularly.
No cure - I'm sure there isn't.
I had a partner with anxiety depression. Until medication was found, sex was one of the easiest ways to stabilize the condition for a more or less long time. Regular sex smoothed out exacerbations.
Considering that a decent part of the disorder is tied to a violation of the production of certain substances by the body, and sex / orgasm promotes the release of hormones, a noticeable improvement was observed.
P.S. I'm not a real medic, this is a story from personal experience.