Prostate Cancer: Prevention, Diagnosis and Treatment:

All men should have an annual digital rectal exam beginning around age 40. Another screening technique is a 'prostate-specific antigen' blood test which checks for a 
special chemical associated with prostate cancer. The test costs about $35 and should be done annually. The newest treatment for prostate cancer and an alternative to surgery, cryosurgery or radiation beams is the implantation of tiny radioactive seeds into the prostate.

Lycopene, a nutrient contained in tomatoes and tomato products such as tomato sauce, tomato paste and ketchup, is an effective prostate cancer deterrent. Studies show that men who eat these foods have less risk of prostate cancer. 
Also, studies show that lycopene fights cancer in men who already have the disease. Prostate tumors are smaller and less aggressive in men who are given lycopene.