“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 mean, if you want to re-shape your nose you can either go to a cosmetic surgeon, or run full speed ahead into a brick wall. Either method would accomplish the mission. One is cheaper, one is more predictable, both are potentially lethal.
Cosmetic surgeons are still surgeons though, even if the procedure is unnecessary.