Chiropractic adjustments cause stroke
Blood flows to the brain through two sets of arteries passing through the neck. These arteries may become weakened and damaged, either over time through aging or disease or as a result of injury. A blood clot may form in a damaged artery. All or part of the clot may break off and travel up the artery to the brain where it can interrupt blood flow and cause a stroke.
Many common activities of daily living involving ordinary neck movements have been associated with stroke. This results from damage to an artery in the neck or a clot that already existed in the artery breaking off and travelling up to the brain.
Chiropractic adjustments have also been associated with stroke. However, that association occurs very infrequently and may be explained because an artery was already damaged and the patient was progressing toward a stroke when they consulted a doctor. Present medical and scientific evidence does not establish that adjustments cause damage to an artery or a stroke.