@johnny8924
I've been taking it since 2021. My PSA hovers around 0.1

It took me aback when my urologist told me that I am doing much better than he expected for someone initially diagnosed with advanced PC. I also remember his words "I don't know what you are doing, but keep on doing it." He will not talk to me about Turkey tail, he changes the topic because it is not part of the standard of care.

The gold standard for medical practice is a large scale drug trial. The reason one hasn't been done on Turkey tail is that the cost of a drug trial runs from five million dollars to one hundred and fifty million dollars. The drug companies cannot make back that kind of money on a natural product used by Chinese practitioners for hundreds of years.

I use Google Scholar for searching on medical topics.

There is also research on the anti-cancer effect of turkey tail on breast cancer, colorectal cancer, and a few others.

Here's one article.

Mycochemicals against Cancer Stem Cells
https://www.mdpi.com/2072-6651/15/6/360
Note: Turkey tail mushrooms are also known as Trametes versicolor and Coriolus versicolor
PSP is a polysaccharide contained by Turkey tail.

"Luk et al. [23] demonstrated that the PSPs isolated from cultured mycelia of the Cov-1 strain of Trametes versicolor (L.) Pilàt target prostate CSCs in vitro and suppress tumour formation in vivo. Treatment of prostate cancer cell line PC-3 with PSP led to the downregulation of CSC markers (CD133 and CD44) in a time and dose-dependent manner. Furthermore, PSP pre-treatment significantly suppressed tumour initiation of PC-3 cells in immunodeficient mice, suggesting that PSPs suppress the tumourigenicity of the PC-3 cells. It is worth noting that the administration of PSPs through oral feeding to transgenic mice that naturally develop prostate tumours resulted in the complete suppression of prostate tumour growth. This finding suggests that PSPs may serve as a potent chemopreventive agent against prostate cancer, potentially by targeting the prostate cancer stem cell (CSC) population. The relevance of PSPs on prostate CSC control was also highlighted in two later studies reporting the control of CSCs and the gut microbiome by the PSP-derived mycelia of the medicinal mushroom T. versicolor strain [15] and the occurrence of potent anti-cancer synergistic activities through targeting of CSCs between PSP and gamma-tocotrienol [24]."