“Excess estrogen probably contributes to prostatitis. To reduce the effects of estrogens, some people recommend taking phytoestrogens. In small quantities, these can block the effects of the stronger estrogens. However, phytoestrogens are dangerous. If you take too much of these, you will experience increased estrogenic effects. In fact, prostatitis can be induced in rats by giving them soy phytoestrogens.”
http://www.healthyawareness.com/articles/prostatitis.htm
"and development of precancerous lesions (PIA and PIN). This preclinical model gives opportunity for screening of drug candidates such as SERMs for prevention and/or treatment of chronic prostatitis and consequently LUTS as well as prostate cancer. "
I don’t kno about the serious of these two sites but it is interesting…