The core tenet of chiropractics is that “life force” flows through the spine and “blocks” in that is what causes diseases/pains.
Most people think they are some kind of spine experts, while in reality it is nothing like that and more like concepts of Chi and meridians.
The thing is, a lot of chiros don’t delve into that crap, because it’s such obvious bullshit, but some do and will tell you in all sincerity that cracking that L6-8 might just kill your cancer.