Thank you all for your thoughts, I really appreciate the feedback.
The text on the website seems to discourage biopsies and treatment for men even when they have suspected PCa... or at least, that was how I interpreted it. He claims to be backed up by research papers/evidence, but also sells his supplements by the truckload to worried men. Rather shocking that his site ended up so high in my search engine when I feel he is deterring people like my dad, with high PSA, from getting treated the conventional way, or leading them to think that the cure is worse than the disease!
My grandfather died of advanced PCa, and it wasn't an easy way to go, so I don't think ignoring the problem is a sensible idea. It is breaking my heart almost every minute of the day, and I am trying to persuade him - slowly - to see a doctor. Wish me luck.
Thank you all again.
Wd