The current causes of prostate cancer are not completely understood, but a large amount of research indicates that genetic and environmental factors play a significant role. Dietary factors, such as the intake of a large amount of unsaturated fatty acids, vasectomy, smoking, obesity, and alcohol consumption, also increase the risk of developing prostate cancer. Overall, the occurrence and development of prostate cancer are related to various factors, including both internal causes in the patient and the influence of external factors.