Vasectomy has no obvious longterm influence on the levels of serum androgens in aging males / 中华男科学杂志

ABSTRACT

Objective@#To explore the longterm influence of vasectomy on the levels of serum androgens in aging males.@*METHODS@#Using stratified random sampling, we conducted a questionnaire survey and physical examinations among 437 adult males aged ≥40 years, 232 with and 205 without the history of vasectomy. In addition, we measured the levels of serum total testosterone (TT), sexhormone binding globulin (SHBG), calculated free testosterone (cFT), testosterone secreting index (TSI), free testosterone index (FTI), and luteinizing hormone (LH).@*RESULTS@#Compared with the nonvasectomy group, the vasectomy group showed significantly increased levels of serum TT (［16.01±5.41］ vs ［17.39±6.57］ nmol/L), SHBG (［58.91±36.89］ vs ［70.28±40.90］ nmol/L), and LH (［8.86±6.49］ vs ［10.85±11.73］ IU/L) (all P0.05), nor after adjustment for relevant factors in TT (β 1.015, 95% CI －0.180－2.210), SHBG (β 5.118, 95% CI －2.069－12.305), cFT (β 0.003, 95% CI －0.011－0.018), FTI (β －0.012, 95% CI －0.035－0.011), TSI (β 0.138, 95% CI －0.131－0.407), and LH (β 1.011, 95% CI －0.811－2.834) (all P>0.05).@*CONCLUSIONS@#Vasectomy has no obvious longterm influence on the levels of serum androgens in aging males.