There’s a SSC quote, long but worth it:
I wear a psychiatrist hat and a therapist hat. I love the psychiatrist hat…When I wear it, then with sufficient knowledge and understanding I can give people substances that release obsessions, calm fears, and brighten sorrows. Sometimes I can help people solve their unbearable hopeless problems, and it’s the best feeling in the world.
…But if someone wants to talk about their problems in a session, you can’t just say no… they expect me to be able to say something that makes it all better. I know that the textbook response is something about how therapy does not solve problems per se, but by sharing them with someone else it makes them more bearable and adds perspective. Unfortunately, my patients didn’t read that textbook, and they put hope in me, and as often as not I betray it.
Medical doctors experience this x1000. No doctor is going to tell you “Hey listen you need to eat right” or actually make you eat right, they can’t, it’s too expensive and completely unenforceable. “Don’t eat sugar for two weeks” is great advice, but great advice gets ignored a lot. Your dentist, dating coach, or anyone else whose job it is to make your life better, is going to make your life easier in the short term.
Couple that with a mass market for addictive substances and it’s no surprise that doctors find themselves unable to recommend stuff like this off the bat. In my experience, they will tell you about stuff like this, but not as a first approach, if you ask them about alternatives to surgery, pills, etc.