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A study by American neurosurgeons adds to evidence suggesting chiropractic can damage arteries supplying the brain...The conclusions of the American neurosurgeons in their recent paper speak for themselves: “Chiropractic manipulation of the cervical spine can produce dissections of the cranial and cervical segments of the vertebral and carotid arteries. Given the popularity of chiropractic treatment, the incidence of this phenomenon is most likely underreported. These arterial injuries can be severe, producing adverse neurological sequelae and even death (including 31% of patients in this series). Consequently, aggressive endovascular and surgical techniques may be required to restore vessel patency and to preserve neurological function." Professor Edzard Ernst, The Guardian (27th April 2012)