I recently took note of warnings about 5 alpha reductase inhibitors possibly being associated with more aggressive prostate cancers.

http://www.drugs.com/fda/5-alpha-reductase-inhibitors-5-aris-label-change-increased-risk-prostate-cancer-12977.html

Has there been further research to counter the warnings? I have been faithfully taking reishi for many months, but maybe there are risks that I should be taking into account.