An elderly man (a friend of mine), leading a sedentary life, has been noticing blood in his urine. Doesn't happen all the time / daily, but otherwise frequent. Faint in color (not like full-on bloody red), but claims he has no urge to go to the loo many times during the night (which may / may not rule out prostate cancer?).

But damn near impossible to get him to visit the clinic for further checks, despite we friends urging him to go.
Could there be a something causing this, based from the information provided?