Testosterone has no effect on the risk of prostate cancer

Male testosterone levels does not affect the risk of prostate cancer, as previously assumed. This should be the scientists to take a fresh look at the problem of the origin of the disease, the researchers reported. Scientists have conducted numerous studies to find the relationship of testosterone with the risk of prostate cancer. As a result, they found no significant association with the disease in hormone levels. The study included 3886 men suffer from prostate cancer and 6,438 healthy men. Prostate cancer - a disease that usually affects older men, is the second biggest killer after lung cancer. The researchers examined blood samples from people before they had cancer, and those who are not sick, to compare the level of testosterone. After a comparison of the blood samples of the two groups, the researchers found no significant association between testosterone levels and the risk of developing the disease. The reasons that scientists believed that testosterone increases the risk of prostate cancer, due to the fact that the hormone promotes the growth of tumors, researchers say. But the latest research, the scientists ought to new risk factors that seek to influence the occurrence of the disease, researchers say.