 The American Cancer Society estimated that in 2007 about 27,000 prostate cancer deaths occurred in the United States and that about 219,000 men have been newly diagnosed. About 1 man in 6 will be diagnosed with prostate cancer during his lifetime. Prostate cancer is the 2nd leading cause of cancer deaths in men after lung cancer. Currently, more than 2 million men are alive who have been diagnosed with prostate cancer in the United States. The aggressiveness of the disease varies; Some cancers develop very slowly and have no symptoms, whereas others spread quickly, invading surrounding tissue and forming metastases. The probability of onset of prostate cancer increases with age, ethnicity, and family history of the disease.  International studies suggest that a diet high in saturated fat may be a risk factor for prostate cancer. There is a high chance of survival if prostate cancer is diagnosed early. It is usually diagnosed when doctors recommend men to have systematic screening. | 
