Re: Health effects of the London bicycle sharing system: health impact modelling study
This study did not take into account important morbidity associated with cycling.
As potential health risks, only road traffic incidents and exposure to air pollution were included.
Genitourinary tract injuries, pudendal nerve entrapment, erectile dysfunction, infertility in both men and women(!), priapism, penile thrombosis, hematuria, torsion of spermatic cord, prostatitis, perineal nodular indurations, elevated serum PSA levels, were not even mentioned.
          
Studies have demonstrated that a high percentage of cyclists are affected by all these pelvic symptoms.
Failing to include all this cycling-associated morbidity has compromised Authors' final conclusions, regarding the amount of health risks associated to cycling, in my opinion.
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Institute for Sexual Medicine, Department of Urology, Boston University School of Medicine, 720 Harrison Avenue, Suite 600, Boston, MA 02118, USA.
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Competing interests: No competing interests