Men who bicycle regularly needn’t worry that the activity will have adverse effects on their urinary tract or erectile function, according to a large multinational study in the Journal of Urology in March 2018.
Participants included 2,774 male cyclists (recreational or intense), who were compared to 539 swimmers and 789 runners. Contrary to some previous research and media reports, the study found that cyclists did not report a higher incidence of erectile or most urinary problems, regardless of their cycling frequency and intensity, bike or saddle characteristics, or road conditions.
The one serious but rare adverse effect of cycling was a higher risk of urethral strictures, which can interfere with urination. Cyclists were also at risk for genital numbness and saddle sores, though this was reduced when handlebars were level with or higher than saddles.
Also see 12 Tips for Better Cycling.