As someone who has cycled lots in the past and heard about cycling causing increased risks of prostate cancer, it was good to read this somewhat reassuring article by Professor Robert Thomas: https://www.nationalworld.com/health/can-cycling-damage-the-prostate-what-men-can-do-to-protect-themselves-4564820
Cycling appears to not be without some possible risks - the importance of a comfortable saddle is covered in the article! And also cycling more than eight hours a week does seem to increase risks...indeed a six-fold increased risk of prostate cancer for those who rode over 8.5 hours per week, however those cyclists still had a lower risk of developing prostate cancer than non-cyclists.
