First off - fasting, like 10 days water fast kinda thing. Generates new stem cells that can fix neurological problems, massively reduces inflammation.
Lifespan book by Dr. Sinclair does a deep dive on that.
Next swimming/yoga/qigong - make your muscles be able to better support your spine. Standing desks also help a lot in that regard if you can handle them.
It’s surprising how much crude tools like that can help inflammation/pain problems. It’s usually not just the movements themselves, it is the whole culture of mindfulness around it. You get to spend more time being at peace with yourself, as well as meeting a lot of people who do it too and encourage you. And that helps a ton as well.
I’ve seen several people embark on those paths with “untreatable” problems with good results, but it might be important that this is not treated as panacea - we don’t want to end up like Steve Jobs.
I personally think fasting is incredibly powerful medical short and longterm tool. And the rest is more psychological one, still very powerful too.
I went to wing chun mostly because of the martial arts training, but did qigong too because it was expected in the peer group. I’ve found that even if the explanations of “why” it worked were clearly bogus (blocked energy pathways - earth/fire/air kinda things) the motions themselves and the culture around them was incredibly soothing. Now I myself didn’t suffer from illnesses but I did meet several people there who mentioned turning to it as a last resort, with positive results. Maybe it’s survivorship bias but I’d recon its still effective.