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“There is evidence to indicate that upper cervical manipulation can cause stroke by injuring vertebrobasilar arteries. Many chiropractors routinely manipulate the neck as part of a treatment regimen designed to improve health by adjusting ‘vertebral subluxations’. Physical therapy practitioners may occasionally use cervical spine manipulation in the treatment of a problem related to loss of mobility. Although stroke caused by neck manipulation is rare, it happens most often among chiropractic patients who may be subjected to unnecessary manipulation based upon untenable guidelines.” This review, written by a retired chiropractor, offers some insight into problems associated with chiropractic neck manipulation. Samuel Homola DC, The Scientific Review of Alternative Medicine (2007)