A diet rich in omega-3 polyunsaturated fatty acids found in certain fish or fish oil, nuts, seeds, and vegetable oils may help lower prostate cancer risk in individuals with a genetic predisposition to cancer.
While many genetic mutations are known to predispose to cancer, it has remained unclear whether dietary fat can modulate the risk of developing cancer in genetically predisposed individuals. Some studies suggest that a diet rich in omega-3 polyunsaturated fatty acids reduces cancer incidence.