“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]”
Yes, several. Including myself for a couple different issues growing up. Eventually I learned enough about the human body to realize how useless the exercises were for the problems I was having exercised properly which finally sorted me out. I just figured I’d gotten unlucky with the two I had, but the more people I meet who’ve spent time in PT the more I realized they might not be as competent as you’d hope they’d be.