New research suggests that middle aged men who spend nine hours a week on their bike are more likely to be diagnosed with prostate cancer.

A British study of 5,200 cyclists is the biggest research project ever conducted on the health impact of cycling. It suggests that cyclists in in their 50s who bicycle for more than nine hours a week may be up to five times as likely to receive a diagnosis of prostate cancer.

These are some pretty scary findings. Now, luckily there are some scholars who are willing to really take a look at the surrounding circumstances of these relative studies.

Study author Dr Mark Hamer, of the Department of Epidemiology at UCL, said:

“These results are not straightforward.”

Thankfully, (sigh of relief). Doctor Hamer brings up a few more VERY valid points;

“It may well be these men are more health aware and therefore more likely to get a diagnosis. Those who are cycling the most did not make up a huge sample so more research is needed.”

Researchers said they could not rule out that the cancer cases were caused by an increased pressure on the prostate.

‘We are talking about very keen cyclists who are on their bikes for nine hours a week – not people who are just commuting to work.’

Dr. Hamer also emphasized that cycling leads to health benefits in other areas, including reducing the risk of type II diabetes, heart disease, and stroke.


The authors of this study are quoted in the journal, Mens Health,  saying;

‘In addition, there was no association between cycling volume and primary care contact, suggesting that these findings are not simply because of increased health awareness.

‘To the best of our knowledge, this is the first study to demonstrate an association between prostate cancer and cycling, so there are no studies hypothesizing a pathophysiological mechanism for such a link.’

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