前立腺癌
The primary risk factors are obesity, age, and family history. Obese men have been found to have a 34% greater death rate from prostate cancer than those with normal weight. Prostate cancer is uncommon in men younger than 45, but becomes more common with advancing age. The average age at the time of diagnosis is 70. Autopsy studies of Chinese, German, Israeli, Jamaican, Swedish, and Ugandan men who died of other causes found prostate cancer in 30% of men in their 50s, and in 80% of men in their 70s.