Hi and welcome,
I had a biopsy with no problems, cancer was found Gleason 3+4=7 i had no symptoms before as high Psa was 2.19 and doctor referred me for further tests after a private medical to renew my 7.5 ton driving licence and i would have been no wiser 12 months on, my cancer was caught early, had Brachytherapy September 2016 all went well,PSA dropping now on six months for blood tests i am 71.I can under stand your thinking but if you have got it you need to have it checked out sooner than later.
I am not sure that not eating red meat fresh fish and having a healthy life style is a cure for prostate cancer or it would be on the list for treatments.I wish you luck with your decisions