Prostate cancer mainly occurs in older men, therefore, the incidence of prostate cancer increases significantly with age, especially after the age of 50. The occurrence of prostate cancer is closely related to lifestyle habits such as diet. A diet high in animal fat is an important risk factor, especially frequent consumption of red meat (pork, beef, sheep, etc.) is a major risk factor because vitamin D is a substance that prevents prostate cancer from occurring, and this type of diet usually contains a lot of calcium, which affects the absorption and metabolism of vitamin D and reduces the level of vitamin D, thus making the tumor prone. This is one of the reasons why the incidence of prostate cancer in our country has skyrocketed in recent years. In addition, genetic factors cannot be ignored. People who have prostate cancer in their family, especially those whose fathers or brothers have prostate cancer, are more than twice as likely to develop the disease than those without a family history. The prostate gland is the largest sex organ, and prostate cancer is a tumor that depends on sex hormones, and sex life also affects the occurrence of prostate cancer. However, for young people, an uncontrolled sex life may increase the likelihood of developing prostate cancer in the future.