Cycling Tied to Higher Prostate Cancer Risk

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Experts note study findings aren't definitive, and risk is minimal.
Experts note study findings aren't definitive, and risk is minimal.

A new study fuels the ongoing debate over the health risks of bicycle riding for men: Researchers found that cyclists who bike more may face a higher risk of prostate cancer, but not a greater chance of infertility or erectile dysfunction. The study appeared in the Journal of Men's Health.

Researchers surveyed more than 5,000 male cyclists from 2012 to 2013. Eight percent of the men reported erectile dysfunction problems, although they weren't more common in men who biked more. The investigators did find links between erectile dysfunction and three factors -- high blood pressure, smoking, and older age. The researchers didn't find any link between more cycling and more cases of infertility, which 1 percent of the men reported.

RELATED: Prostate Cancer Outcomes Associated With Clinical Depression

Just under 1 percent of the men overall reported being diagnosed with prostate cancer. Those who biked the most, more than 8.5 hours a week, were much more likely to have prostate cancer than the other men. Of the 498 men who biked the most, 17 said they had prostate cancer (3.5 percent). Of those who biked the least, three out of 511 (0.5 percent) said they had prostate cancer, the findings showed.

However, the findings aren't definitive, and they conflict with previous research on impotence and infertility. Lead author Milo Hollingworth, M.B.B.S., a research associate at University College London, acknowledged to HealthDay that the findings are "difficult to interpret." He stressed that "men shouldn't worry about increasing their risk of prostate cancer by cycling. Men should cycle as much as they did before. The benefits for your heart, lungs, whole body, and mental health are much more important."

  1. Hollingworth, Milo, et al. "An Observational Study of Erectile Dysfunction, Infertility, and Prostate Cancer in Regular Cyclists: Cycling for Health UK Study." Journal of Men's Health. doi:10.1089/jomh.2014.0012. July 11, 2014.

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