"Chiropractic is a pseudoscientific alternative medicine that is concerned with the diagnosis and treatment of mechanical disorders of the musculoskeletal system, especially the spine."
"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."
"There is not sufficient data to establish the safety of chiropractic manipulations. It is frequently associated with mild to moderate adverse effects, with serious or fatal complications in rare cases. There is controversy regarding the degree of risk of vertebral artery dissection, which can lead to stroke and death, from cervical manipulation. Several deaths have been associated with this technique and it has been suggested that the relationship is causative, a claim which is disputed by many chiropractors."
"D. D. Palmer founded chiropractic in the 1890s, after saying he received it from "the other world"; Palmer maintained that the tenets of chiropractic were passed along to him by a doctor who had died 50 years previously. His son B. J. Palmer helped to expand chiropractic in the early 20th century. Throughout its history, chiropractic has been controversial. Its foundation is at odds with evidence-based medicine, and has been sustained by pseudoscientific ideas such as vertebral subluxation and innate intelligence. Despite the overwhelming evidence that vaccination is an effective public health intervention, among chiropractors there are significant disagreements over the subject, which has led to negative impacts on both public vaccination and mainstream acceptance of chiropractic. The American Medical Association called chiropractic an "unscientific cult" in 1966."