"Snake Oil."
Chiropractic is not for everyone. For some it does nothing, for others it's a miracle. I fall into the latter category.
I have a disc bulge at S1-L1. This is verified by MRI. I also have some problems with my C2-C3 due to a motorcycle accident in 1987. I also have a problem with my Sacral joint on the left side...apparently, the ligaments on that side are a bit more "stretchy" and my left Ilium goes lateral against the joint, causing a helluva lotta pain.
I dealt with all this w/modern medicine (heat compresses and drugs when it got bad...I liked the drugs...) for many years.
Finally, I went to see a Chiro. The adjustments combined with electro-stim therapy works wonders. Granted, the relief is only for about 48-72 hours, but isn't that better than pain 24/7? I say yes.
Musculoskeletal pain is caused by bones going out of place and torquing muscles the wrong way and pinching nerves. Chiropractic treatments realigns bones the way they should be, relieving the pinch, ergo the pain.
He also uses pressure points to relieve pain. Rember "The Vulcan Pinch" that Spock had? Like that, except in weird places...behind the knee (that hurts!) and between the shoulder blades. It hurts when he does it, but the pain relief is immeditately apparent afterwards.
It's worked for me and I recommend it. It's better than walking around stoned all the time...even though that is fun, that's just treating the symptom and not the cause.