"Systematic reviews of controlled clinical studies of treatments used by chiropractors have found no evidence that chiropractic manipulation is effective, with the possible exception of treatment for back pain.[8] A 2011 critical evaluation of 45 systematic reviews concluded that the data included in the study "fail[ed] to demonstrate convincingly that spinal manipulation is an effective intervention for any condition."[10] Spinal manipulation may be cost-effective for sub-acute or chronic low back pain, but the results for acute low back pain were insufficient.[11] No compelling evidence exists to indicate that maintenance chiropractic care adequately prevents symptoms or diseases.[12]"
I recently learned that chiropractors in Switzerland are very different. They are all medical doctors and need to fulfill strict requirements so they can work as chiropractor. It is also a common thing here to go to chiropractors and I have never heard of any accidents.
those are 'licensed physical therapists'.. the few good things that might be attributed to chiropractors are ready done by actual medical professionals... even here in the u.s.
the difference is, we allow quacks to pretend to be 'doctors' here. a certain subset of the population are drawn to the homeopathic, pseudo-science nature of it.