The causes of prostate cancer are unknown, but age, ethnicity, family history, obesity and poor diet, and other factors may put you at an increased risk of developing prostate cancer. 1.Age. The risk of prostate cancer increases with age. 2. ethnicity. Current research says that blacks have a higher risk of developing prostate cancer. 3. family history. If fathers and brothers have had prostate cancer or relatives have had prostate cancer at a lower age, the risk of developing prostate cancer increases. 4. Obesity and poor eating habits. Obesity and excessive intake of fat, excessive intake of fat will cause an increase in the level of testosterone, increasing the risk of prostate cancer. 5. Other factors. Excessive drinking, abnormal hormone secretion, suffering from prostatitis and other sexually transmitted diseases will increase the risk of prostate cancer. You should develop good living habits and regular work and rest in your daily life. If you suspect prostate cancer, you should consult a doctor in time.