Prostate cancer in itself does not kill. It is the spreading or metastisizing of the cancer to other vital organs in the body that leads to death. Citrus pectin may also help prevent prostate cancer because it helps prevent the metastisizing of the prostate cancer. Pectin is normally an unabsorbable component of citrus fruit's fiber, but a study modified it to be water soluable thus able to be absorbed by the body. It can be taken in supplemental form.
Red meat is known by most and believed to be a contributing factor to developing prostate cancer.
Certain types of dietary fat may increase the risk of prostate cancer. Pollutants are linked to prostate cancer incidence and low sperm counts. Environmental estrogens found in some plastics and pesticides have already been implicated in contributing to the cause of breast and prostate cancer. Incidentally it has been found that vasectomies increased the risk of prostate cancer by 56 percent. There are a few possible reasons.