The incidence of both breast cancer and prostate cancer has increased significantly in the industrialized countries over the past three decades. Can you think what non-environmental factors might account for a portion of these increases?

The incidence of both breast cancer and prostate cancer has increased significantly in the industrialized countries over the past three decades. Can you think what non-environmental factors might account for a portion of these increases? Write at least a full page essay. This essay must be single spaced, and front 12.