NIH - Medical Encyclopedia Prostate cancer

"The cause of prostate cancer is unknown, although some studies have shown a relationship between high dietary fat intake and increased testosterone levels. … Prostate cancer is the third most common cause of death from cancer in men of all ages and is the most common cause of death from cancer in men over 75 years old. Prostate cancer is rarely found in men younger than 40. … Men at higher risk include black men older than 60, farmers, tire plant workers, painters, and men exposed to cadmium. The lowest incidence occurs in Japanese men and vegetarians. Prostate cancers are classified or staged based on their aggressiveness and how different they are from the surrounding prostate tissue. There are several different ways to stage tumors, a common one being the A-B-C-D staging system, also known as the Whitmore-Jewett system: A: Tumor is not palpable (not felt on physical examination), and is usually detected by accident after prostate surgery done for other reasons. B: Tumor is confined to the prostate and usually detected by physical examination or PSA testing. C: Tumor extends beyond the prostate capsule without spread to lymph nodes. D: Cancer has spread (metastasized) to regional lymph nodes or other parts of the body (bone and lungs, for example)."

Highlighted Articles

Body Mass Index, Weight Change, and Risk of Prostate Cancer in the Cancer Prevention Study II Nutrition Cohort (Cancer Epidemiology Biomarkers & Prevention 2007)

" Conclusion: Obesity increases the risk of more aggressive prostate cancer and may decrease either the occurrence or the likelihood of diagnosis of less-aggressive tumors. Men who lose weight may reduce their risk of prostate cancer."

Meat Consumption among Black and White Men and Risk of Prostate Cancer in the Cancer Prevention Study II Nutrition Cohort (Cancer Epidemiol Biomarkers Prev 2006)

"No measure of meat consumption was associated with risk of prostate cancer among White men. Among Black men, total red meat intake (processed plus unprocessed red meat) was associated with higher risk of prostate cancer … this increase in risk was mainly due to risk associated with consumption of cooked processed meats (sausages, bacon, and hot dogs … This study suggests that high consumption of cooked processed meats may contribute to prostate cancer risk among Black men in the United States."