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BACKGROUND: The effects of bariatric surgery on testosterone levels in men with obesity and hypogonadism have not been thoroughly explored yet. OBJECTIVES: To investigate the possible effects of bariatric surgery on T levels in obese hypogonadal men by comparing T levels before and after surgery using a comprehensive claims database. MATERIALS AND METHODS: The TriNetX US Collaborative Network database was used to identify men ages 18-80 who underwent a bariatric procedure and had a serum T value of < 350 ng/dL prior to surgery. Men who received testosterone therapy before/or after surgery were excluded. We conducted a retrospective self-matched cohort analysis to examine the difference in serum T levels before and after bariatric surgery. A sub-analysis was carried out to explore differences between men who reached eugonadal status or maintained low T levels following surgery. Descriptive statistics detailed sociodemographic and clinical characteristics, with continuous and categorical data compared using unpaired t-tests and chi-square analysis, respectively. Changes in T levels and body mass index (BMI) before and after surgery were compared using an unpaired t-test with a < 0.05 set for significance. All analyses were conducted using the TriNetX platform which utilizes both Python and R software. RESULTS: The study analyzed 69 hypogonadal men who underwent bariatric surgery and had T levels assessed before and after the procedure. The mean (standard deviation) pre-surgery serum T level was 208 ± 79 ng/dL, which post-surgery increased to 371 ± 164 ng/dL, marking an average increase of 163 ± 164 ng/dL. Likewise, the mean (standard deviation) body mass index decreased from 42.9 ± 9.0 to 38.8 ± 5.7 kg/m2. Post-surgery, 45% (31 men) achieved eugonadal status, while 55% (38 men) continued to have low T levels. A comparison between the post-surgery eugonadal cohort and the persistent low T cohort revealed that the former had higher pre-surgery serum T levels (235 ± 71 ng/dL vs. 184 ± 80.4 ng/dL, p = 0.007), a higher pre-surgery body mass index (45.5 ± 4.5 kg/m2 vs. 41.1 ± 11.5 kg/m2, p = 0.041), and a significantly greater reduction in body mass index post-surgery (7.3 ± 7.2 kg/m2 vs. 2.0 ± 12.8 kg/m2, p = 0.04). Notably, the increase in T was significantly higher in the eugonadal cohort compared to the persistent low testosterone cohort (257 ± 143 ng/dL vs. 95 ± 178 ng/dL, p < 0.0001). CONCLUSION: This study provides evidence of bariatric surgery's positive effect on serum T levels in obese men with baseline low T. Almost one out of two men with low T reached normal T levels after bariatric surgery. As the most comprehensive study to date, it validates and substantiates previous work suggesting that weight loss can improve T levels physiologically.
RESUMO
OBJECTIVE: To assess the risk of new persistent opioid use in opioid-naïve men who underwent male fertility procedures. DESIGN: Retrospective cohort study using a claims database. SETTING: A database linking electronic medical record data and claims-assessing men who underwent fertility procedures between 2010 and 2021. PATIENT(S): Opioid-naïve men who underwent fertility procedures (open or laparoscopic varicocelectomy, spermatocele excision, and testicular excisional or incisional biopsy) without further surgical intervention requiring anesthesia in the 2 years after the index procedure. Those with and without perioperative opioid prescriptions were propensity score matched on age, race/ethnicity, smoking status, mental health diagnoses, and preoperative pain diagnoses. INTERVENTION(S): Perioperative opioid prescription. MAIN OUTCOME MEASURE(S): The primary outcome was the incidence of new persistent opioid use (opioid prescription 3-9 months after the index fertility procedure). The secondary outcome was prolonged opioid use (opioid prescription 9-24 months after the index fertility procedure). RESULT(S): A total of 387,565 men who underwent fertility procedures were identified, of whom 25.1% received an opioid prescription. After propensity score matching, 97,215 men were included; 4.7% of men who received a perioperative opioid prescription developed new persistent opioid use compared with 2.2% of those without a perioperative opioid prescription (risk ratio, 2.16; 95% confidence interval, 2.05-2.27; number needed to harm, 39). When assessing each unique fertility procedure independently, men who received perioperative opioids had statistically higher odds of developing new persistent opioid use for all procedure types. Men with new persistent opioid use were much more likely to go on and develop prolonged opioid use than men without new persistent opioid use. CONCLUSION(S): Opioid prescription after male fertility procedures is associated with a significant risk of new persistent opioid use, emphasizing the importance of judicious opioid prescribing for male fertility procedures.