As someone with a bowel disease, I can thank medicine for giving me my life back.
Maybe, but at the end of the day it is your decision. You absolutely can read a pile of papers on your specific issue and invest hours into it. It will without a shadow of a doubt be more attention than the GP has for you (at ~10 minutes per appointment), or even a specialist who might invest an hour into you if you're lucky. Unless you're dying, in which case it's still not certain.
For me, being prescribed increasingly higher doses of steroids in the beginning of the lockdown we had here because of my asthma was not nice. After about a year of this, I realised it got a lot worse after staying indoors for 1.5 years. It sounds obvious and in hindsight it was, but my doctor knew all of this and never ever addressed the fact that maybe I should spend more time outside (with absolutely 0 mention of testing for vitamin levels or prescribing something along those lines). Doctors come in widely varying qualities and some of them are really bad.
Controlling stress and smoking have been the best fixes (the latter works but smoking is still bad for you).