Study finds that out of the more than 488,000 patients who had their appendixes removed, 4,470 (0.9%) of them went on to develop Parkinson's disease. Of the remaining 61.7 million patients who didn't have appendectomies, only around 177,000 (0.3%) later developed Parkinson's.

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Study finds that out of the more than 488,000 patients who had their appendixes removed, 4,470 (0.9%) of them went on to develop Parkinson's disease. Of the remaining 61.7 million patients who didn't have appendectomies, only around 177,000 (0.3%) later developed Parkinson's.