All men are at risk.
The most common risk factor is age. More than three quarters of men diagnosed with prostate cancer each year are over the age of 65. African American men have a higher risk of prostate cancer than white Americans. Dramatic differences in the incidence of prostate cancer are seen in different countries, and there is some evidence that a diet higher in animal fat may, in part, underlie these differences in risk. Genetic factors also appear to play a role, particularly for families in whom the diagnosis is made in men under 60 years of age.