Adverse events have been reported extensively following chiropractic. About 50% of patients suffer side-effects after seeing a chiropractor. The majority of these events are mild, transitory and self-limiting. However, chiropractic spinal manipulations, particularly those of the upper spine, have also been associated with very serious complications; several hundred such cases have been reported in the medical literature and, as there is no monitoring system to record these instances, this figure is almost certainly just the tip of a much larger iceberg...
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