Don't shoot the messenger. Cant is entirely correct - Times article (paywall, sorry) on how a recent study has shown that antigen tests on men who are asymptomatic show precisely... nothing at a population level:
"UK researchers looked at whether a one-off test could avoid some of these issues in a trial of 400,000 men, half of whom were invited for checks. After a decade, prostate cancer death rates in both groups were identical, at 0.3 per cent, it was reported in the Journal of the American Medical Association. PSA screening missed two thirds of lethal cancers, but was more likely to pick up low-grade tumours than waiting for men to report symptoms."
Radio 4's Inside Medicine also covered this today (and their podcast isn't behind a paywall, obviously!)
You're much better off learning (or encouraging the men in your life to learn) the symptoms of prostate cancer. This is from the NHS website:
Symptoms of prostatitis can include:
pain in the pelvis, genitals, lower back and buttocks.
pain when urinating.
a frequent need to pee.
difficulty urinating, such as problems starting to pee.
pain when ejaculating.
pain in the perineum (the area between the anus and scrotum), which is often made worse by prolonged sitting.
If your DH, OH, dad, uncle... has these symptoms, they should go to the doctor, not bury their head in the sand and hope it'll all go away.