No Explanation...Micro-Metastatic PCa. PSA FALLING

I'm also a cryo guy How old are you?
You might have a little bit of prostate tissue alive, but it should have come back in the first year or so.
I'm surprised that just vitamin D is involved with drop in PSA. Never heard of that.
When my PSA went up a tiny bit, my uro had me take a Free PSA test. It came back 50%.
A drop in testosterone or drop in inflammation might produce a lower PSA.

I try to eat lentils and soy instead of meat. Take supplements besides vitamin D.
Anyway, I hope you can delay the beast as long as possible. Good luck.

Hi Robert. I am 60. I was 54 when first diagnosed in late 2005.

My PSA journey since nadir (0.2) in the summer of 2006 had been rather unremarkable until late 2011. With both increases in PSA and a couple of declines in PSA from 2006-2011, I hadn't even reached "Cryo-failure' (nadir+2.0) until February 2011. At that point the velocity was becoming quicker  (2.4 Feb 2011, 2.8 Aug 2011 and whamo, 4.2 in Feb 2012). At this point last year my Dr and I agreed that if the scans and biopsy are both negative, we would wait until PSA hits between 8 and 10 to go on hormone ablation. That is also when I increased the vitamin D to 5,000 IU's/daily. BTW: my August readings in the past have always shown a lower velocity over the six months since the previous February but they are also represented the couple of readings that actually came in lower than the previous February. So, at least in my case, I have to believe that Vitamin D, either by sun or by supplement, has had an influence in slowing the psa growth. But I didn't expect this.....

As to my T level, of course it is likely getting lower with age; I don't feel like a teenager anymore. But if I compare the way I felt at age 53 to age 60, I actually have MORE energy and my libido is similar.

BTW: the same lab has done all of my PSA's (Quest). However, there is always the chance (and I have to believe that is the case) that the 4.2 reading a year ago was outright WRONG. If I take that out, than my PSA has gone from 2.4 in Feb 2011 to 3.0 in Feb 2013 and the stabilization over that period could perhaps  be attributed to Vitamin D and/or just plain old good luck.

Since you are also a cryo guy, my doctor was/is Ralph Miller out of Allegheny General in Pittsburgh.

I had my cryo done by Dr Stephenson at Cleveland Clinic . He has me seeing a nurse practitioner periodically.

I'm taking 4000 units of D in the winter, less in summer, pomegranate, fish oil, IP6, d-limonene . Was taking metformin and red yeast rice but am taking a break due to digestive issues.