Ginger
- In 2012 Nutrition Journal published an animal study which showed that feeding rats 100mg/kg/body weight ginger daily reduced prostate tumor progression by 56 percent. [Source]
Quercetin
- In 2004 Clinical and Diagnostic Laboratory Immunology published an in vitro study which demonstrated that quercetin significantly inhibited the growth of highly aggressive prostate cancer cells. [Source]
Cruciferous vegetables
- In 2004 Nutrition and Cancer published a study of 428 men with prostate cancer and 537 controls (no prostate cancer) which found that cruciferous vegetables and particularly broccoli (one of the highest sources of sulforaphane) were associated with lower prostate cancer risks and that men with the glutathione S-transferase M1 genotype present (which increases risk) and high broccoli intake had the greatest reduction in risk. [Source]
- In 2012 the International Journal of Urology published a meta-analysis of 13 studies which found that cruciferous vegetable intake was correlated with a decreased risk of prostate cancer. [Source]
Vitamin C
- In 2015 the Journal of Cancer published a meta-analysis of 18 studies involving 103,658 subjects which found an inverse relationship between dietary vitamin C and prostate cancer risk. [Source]
Coffee
- In 2014 Cancer Causes and Control published a meta-analysis of 21 studies involving 472,196 subjects which found that compared with the lowest category of coffee consumption, the highest category showed a significant reduction in prostate cancer risk. The data showed that 4 or more cups of coffee per day is associated with a reduced risk of prostate cancer, including high-grade, fatal prostate cancer. [Source]