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  • Title: Long-term effects of vasectomy on pituitary-gonadal function in man.
    Author: Varma MM, Varma RR, Johanson AJ, Kowarski A, Migeon CJ.
    Journal: J Clin Endocrinol; 1975; 40(5):868-71. PubMed ID: 12307565.
    Abstract:
    16 normal fertile men and 81 men who had been vasectomized 1-5 years previous to the study were examined for plasma concentrations of testosterone (T), follicle-stimulating hormone, luteinizing hormone, and percent binding of T to plasma protein. No significant differences between any of the vasectomy groups and controls could be established for plasma concentrations of any of the hormones measured. Also, no significant difference was observed between the vasectomy groups and controls for the percent binding of T to plasma protein. It appears that vasectomy does not result in abnormal secretions of testosterone and gonadotropins.
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