8. MYTH: Bicycle seats cause damage to the testicles.
FACT: Evidence regarding bicycle seats pertains to erection, not fertility. Bicycle riding has been linked to an increased risk of erectile dysfunction (ED) and abnormal perineal sensations in male riders. A 2007 Boston University study examined digital three-dimensional (3D) models of a pelvis, pudendal arteries and bicycle seats to evaluate the potential sites of compression of the vessels. The study, published in the January 2007 British Journal of Urology International found that a grooved seat is better than a standard seat, but the rider's position is more important for reducing compression than seat design alone. An individual's anatomy, seat design and rider position can all increase the potential for penile hypoxia and erectile dysfunction and perineal numbness.