I doubt that materially more guys in their 40s are getting prostate cancer now than, say, 10 or 20 years ago. Instead, I suspect more guys in their 40s are getting tested -- and some of those guys (small %) end up having prostate cancer. Before guys in their 40s started getting psa tests, very few guys in their 40s got diagnosed with prostate cancer. Doesn't mean they did not have it -- just weren't diagnosed. The exceptions were those diagnosed with symptoms, and in many cases uncurable disease. (First time I got tested, at 40, and with family history, the result came back 1.4 and said, essentially, "you are fine; it is under 4.0"). Now, 1.4 at age 40 is not a reason to rush off to the hospital, but it is certainly high for that age and someone should have said "watch this very carefully." (fortuntely, i had read up a fair amount, since my father had recurrent prostate cancer at the time, so I know to watch it carefully). Now, 7 years later, my psa was 1.5 at the last test. So no big increase. But I continue to watch it like a hawk -- get tested every 6 months -- even though doc said every year is sufficient.