Bariatric Surgery May Improve Lower Urinary Tract Symptoms in Men with Obesity

Sarfaroj Khan 


April 16, 2021


  • Bariatric surgery demonstrated a significant improvement of lower urinary tract symptoms (LUTS) in men with obesity.

  • Additionally, a reduction in body mass index (BMI) and mean total body weight (TBW) was observed.

Why this matters

  • Findings warrant future studies to investigate the detailed pathophysiological mechanisms underlying the development of LUTS in male patients with obesity and their improvement following weight loss surgery.

Study design

  • UK researchers performed a meta-analysis of 7 studies including 334 male patients who underwent bariatric surgery.

  • Primary outcome: LUTS before and after bariatric surgery assessed using the International Prostate Symptom Score (IPSS).

  • Secondary outcomes: changes in BMI and mean TBW.

  • Funding: None disclosed.

Key results

  • IPSS score varied from 3-12.7 pre-operatively and 1.9-6.9 post-operatively.

  • Bariatric surgery was associated with a significant improvement in the IPSS score (mean difference [MD], 2.82; 95% CI, 0.96-4.69; I2, 89%; P=.003).

  • Bariatric surgery was associated with a significant reduction in BMI (MD, 9.41; 95% CI, 7.67-11.15; I2, 58%; P<.00001) and mean TBW (MD, 28.33; 95% CI, 21.10-35.57; I2, 54%; P<.00001).


  • Heterogeneity among studies.

  • Results may have limited generalisability.


Stefanova I, Currie AC, Newton RC, Albon L, Slater G, Birnie A, Hawkins W, Pring C. Systematic Review and Meta-Analysis of the Impact of Bariatric Surgery on Lower Urinary Tract Symptoms in Males. Obes Surg. 2021 Apr 13 [Epub ahead of print]. doi: 10.1007/s11695-021-05403-z. PMID: 33847876.  View abstract 

This clinical summary originally appeared on Univadis, part of the Medscape Professional Network.


Comments on Medscape are moderated and should be professional in tone and on topic. You must declare any conflicts of interest related to your comments and responses. Please see our Commenting Guide for further information. We reserve the right to remove posts at our sole discretion.