The following 2012 article discusses a study that shows green tea can slow prostate cancer growth:
webmd.com/prostate-cancer/n....
Other foods that might slow prostate cancer growth are noted in this article:
webmd.com/prostate-cancer/s...
edit 2/9:
I also found tI am a coffee drinker, 2-3 cups/day, filtered.
The following articles about the benefits of coffee regarding prostate cancer: