I take suppliments because I believe that they may slow the growth of PCa tumors. There is a lot of evidence that diet impacts PCa both negitively and positively. This topic was discussed in a HW thread about
2 weeks ago. You should check it out.
There is a lot of information on diet/suppliments and prostate cancer on the internet it you want to find out more, just google it.
Best of luck to you and you father. BB