In the first-ever population-based study in the U.S. to examine the risk of stroke after spinal manipulation, the National Institutes of Health (NIH) has issued a report stating that chiropractic care is unlikely to cause stroke. The report was based on a study published in the Journal of Manipulative and Physiological Therapeutics on January 15, 2015.
The NIH report, first published Jan. 15, and updated on March 3, 2015, starts by stating, “An analysis of Medicare claims data from older Americans who sought care for neck pain from chiropractors suggests that cervical spine manipulation is unlikely to cause stroke.” This newest study adds to the growing body of scientific evidence that shows that chiropractic care is safe and does not increase the risk of stroke. In addition to being the first study to examine the risk of stroke after spinal manipulation, this the first such study on older adults, the NIH report noted.
The study was conducted by researchers from Dartmouth College and the Southern California University of Health Sciences and was supported by the National Center for Complementary and Integrative Health. The authors note that this study research plan was reviewed and approved by the Dartmouth College Committee for Protection of Human Subjects.
Researchers reviewed 1.1 million Medicare claims from 2006 through 2008. Cases included in the data were all Medicare patients ages 66 to 99 who had a diagnosis of neck pain and who had visited either a chiropractor or a medical doctor for that condition. The researchers then checked the records to see how many of these patients had suffered a stroke within 7 days or within 30 days of their visit to either provider.
The results of this study showed that the rate of vertebrobasilar stroke, the type of stroke some chiropractic opponents have linked to chiropractic adjustments, is extremely rare. The researchers noted that when reviewing the data for all types of strokes, there was no statistical risk shown when comparing Medicare patients who went to medical doctors or chiropractors for the complaint of neck pain.
In their conclusion, the researchers noted how small the risk of stroke was for seniors under chiropractic care: “Chiropractic cervical spine manipulation is unlikely to cause stroke in patients aged 66 to 99 years with neck pain,” the report said.
Dr. Michael McLean, president of the International Chiropractors Association, said: “For many years, there have been opponents to chiropractic who have tried to falsely claim that chiropractic is dangerous. The facts show that chiropractic is the safest form of health care available.
“While no procedure in health care is 100 percent risk free, this well-done large study should finally put to rest any speculation that chiropractic care creates an increased risk for stroke,” he added.