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Using questionnaire information provided by 4.385 vasectomized and 13,155 matched, non-vasectomized men, we found no significant differences between them for a large number of symptoms and diseases, including those of the cardiovascular system. After taking into account differences in their martial status, past smoking habits, and physical activity at work, significant statistical associations of vasectomy with joint pain or swelling, back trouble, and a history of kidney or bladder infection persisted. Our data are inconsistent with the occurrence of large increases in the risks of many important diseases in vasectomized humans.

A survey of personal habits, symptoms of illness, and histories of disease in man with and without vasectomies.