Cruciferous vegetables may reduce recurrence of prostate cancer and the metastatic spread of prostate cancer. It doesn’t need that much broccoli – 1 serve a week vs 1 serve a month seems to make a difference. Why wouldn’t anyone eat broccoli.

http://www.nutritionaction.com/daily/how-to-diet/cruciferous-vegetables-prostate-cancer/

Nutrition Action – Cruciferous Vegetables and Prostate Cancer