New studies have debunked the association of stroke and chiropractic manipulation.
The newest study of 1829 stroke cases found no significant association between chiropractic visits and strokes caused by vertebral artery dissection.
For the last few years, the public has been told that visiting a chiropractor with complaints of neck pain or headache bore a significant risk of stroke if such patients were given neck manipulations.
For many years we were told the upper cervical chiropractic care increases the incident of strokes. These studies were neglecting to include groups that visited a primary care medical doctor. The newest and more accurate studies including the Cassidy study show the risk of injury to the head, neck or trunk in Medicare patients with a neuromusculoskeletal problem visiting a chiropractic office within seven days was 76 percent lower than among those who saw a primary care physician.
Cassidy JD, Boyle E, Coe P, He H, Hogg-Johnson S, SIlver FL, Bondy SJ. Risk of vertebrobasilar stroke and chiropractic care: results of a population-based case control and case-crossover study. Spine, 2008;33(4S):S176-S183.