Ghafouri-Fard et al. (35) summarized the recent data about the preventive and therapeutic influences of quercetin in prostate cancer and found out that quercetin might prevent the initiation of prostate cancer as it indirectly blocks the activity of promoters of two important genes in the pathogenesis of prostate cancer, i.e., AR and PSA. The gene discussed is AR; the disease is prostate carcinoma.