[header] How to reduce the risk of prostate cancer [title] Learn about personal risk factors. [step] Some of the major personal risk factors for prostate cancer are age and family history. The risk of prostate cancer increases the older you get. 
Although approximately 75% of the cases of prostate cancer have no pattern or order, about 20% of those with prostate cancer have had cases of the disease in their family previously. There are also approximately 5% of cases that are hereditary.