Here is my story, sad but true...........about a girl that I once knew..... skip it.
I went to my PCP sveral years ago, and he informed me, that I had a silent heart attack, diabetes and possibly prostate cancer. Other than that, I was in good health.
Since i take my health seriously, I got my diabetes under control with a A1C reading under 6.0. I went for a stress test and sonogram and the test results were negative. I went to the urologists for my prostate and he gave me the option of waiting six months, and see where my PSA level was, or have a prostate biopsy. I opted for the priostate biopsy, and it came back negative. This test is one of life great joys, NOT.......
The urologist on subsequent visits mentioned a supplement call Prostate 2.4, to keep my prostate healthy as I was having problems with imflammation of the uretha. I found prostate 2.4 to work very well for the inflammation and keeps my prostate level in the low 1's, as it previously was in the low 3's. The urologists also said that some people believe in the supplements,and some people don't. I guess it depends on whether it is helping you, to feel better.
I think every condition is different and we are not doctors who spent years in training for the various ways the diseases attack our bodies and we can only speculate of what is right for ourslves. One needs to trust their doctors judgement,as they know more than we do. I don't buy the diet theory for cancer, as a form of treatment, as I believe stronger medicaion, is needed, in most cases.
Please don't your last words be, "I should have had that test done earlier".
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"It doesn't cost "nuttin", to be nice". 
MOM
I just want to do the right thing! Uncle Joe, (my hero).