Causes for prostate cancer
Epidemiological studies have identified a number of risk factors. Most investigators suggest that prostate cancer results from interrelation between genetic factors, endogenous hormones and environmental influences (Ekman P et al. 1999; Bosland2000). Despite the substantial morbidity from prostate cancer worldwide, age, ethnicity and family history are the only established risk factors. Evidence on diet, especially animal fat intake, is promising but inconclusive (Kolonel, 1996). Data on other risk factors, such as circulating levels of hormones, physical activity, body size, smoking, drinking, sexual behaviour and occupational exposures are conflicting (Nomura and Kolonel, 1991).A complicating factor in dissecting
Epidemiological studies have identified a number of risk factors. Most investigators suggest that prostate cancer results from interrelation between genetic factors, endogenous hormones and environmental influences (Ekman P et al. 1999; Bosland2000). Despite the substantial morbidity from prostate cancer worldwide, age, ethnicity and family history are the only established risk factors. Evidence on diet, especially animal fat intake, is promising but inconclusive (Kolonel, 1996). Data on other risk factors, such as circulating levels of hormones, physical activity, body size, smoking, drinking, sexual behaviour and occupational exposures are conflicting (Nomura and Kolonel, 1991).A complicating factor in dissecting