In a groundbreaking discovery, fertility researchers have uncovered the unexpected impact of prednisone on postvasectomy reversal outcomes. The findings, presented by Dr. Landon Trost at the 2024 annual meeting of the American Urological Association, have sent shockwaves through the medical community.
Dr. Trost, director of the Male Fertility and Peyronie’s Clinic in Orem, Utah, and a faculty member at Mayo Clinic, revealed that high doses of the steroid prednisone, commonly prescribed to prevent scarring and blockages associated with vasectomy reversals, may actually reduce fertility. This revelation marks the first time such an effect has been demonstrated.
“This is the first time it’s been shown that high doses [of prednisone] can make someone infertile,” remarked Dr. Trost. “I almost didn’t believe the data when I saw it. It opens up a whole new set of areas for research and exploration.”
The study, conducted by Dr. Trost at his own expense, enrolled 75 men with a mean age of approximately 38 years and a mean time since vasectomy of 6.6 years. Participants were divided into different treatment arms, including low-dose prednisone, high-dose prednisone, prednisone as-needed, and a control group receiving no prednisone.
Surprisingly, the results revealed that the high-dose prednisone group experienced a significant decrease in pregnancy rates compared to the control group. At the 1-year mark, pregnancy rates were 38% in the prednisone as-needed group and a mere 17% in the high-dose group, compared to 67% in the low-dose and control groups.
Dr. William Berg, director of the Stony Brook Urology Men’s Health Program, emphasized the significance of these findings, calling the practice of prescribing prednisone for vasectomy reversals “unsubstantiated” prior to this study. He noted that while modern postvasectomy reversals can achieve patency rates as high as 98%, the accumulation of scar tissue can lead to decreased sperm counts over time.
The unexpected decrease in pregnancies with higher doses of prednisone suggests a previously undocumented effect on sperm function. Dr. Berg highlighted the importance of this discovery, stating, “I don’t think this ever has been described before.”
Dr. Trost, acknowledging the implications of his findings, promptly ceased the use of high doses of prednisone in his practice and predicted that other clinics would follow suit. The study’s outcomes underscore the need for further research into the effects of medications on fertility outcomes, paving the way for more informed treatment approaches in the field of male fertility.