Updates for July 2014

July 31. In PSA Screening and Early Detection Part 2: Regarding the discussion of bicycling above, an observational study of 5282 male cyclists over 50 years old found an association between cycling and prostate cancer. Those cycling more than 3.75 hours per week were 3 to 6 times more likely to develop prostate cancer than those who cycled for less than 3.75 with the risk increasing the more they cycled. No relationship was found between cycling and ED or fertility. [full text]