However, when these people move to the United ...

For example, black American men have a higher risk of getting prostate cancer than Japanese or white American men. Environment, diet, and other unknown factors, however, can change these genetic predispositions. For example, prostate cancer is rare among Japanese men living in their native Japan. However, when these people move to the United States, their incidence of prostate cancer increases substantially. Prostate cancer is also more common among family members of patients with prostate cancer. Thus, a man whose father, grandfather, uncle, and even prostate cancer are also at increased risk of developing prostate cancer. To date, however, no specific genes for prostate cancer has been identified and verified (genes that are located on chromosomes in the cell nucleus, the chemical compounds that determine specific traits in humans). Testosterone, the male hormone, directly stimulates the growth and normal prostate tissue and prostate cancer cells. It is not surprising that this hormone is believed to be involved in the development and growth of prostate cancer. An important consequence of the role of this hormone, which decline in testosterone should be (and usually is) effective in suppressing the growth levaquin side effects 750 mg of prostate cancer. Environmental factors such as cigarette smoking and a diet high in saturated fat seems to increase the risk of prostate cancer. Inactive ingredients or toxins in the environment or from industrial sources may also contribute to the development of prostate cancer, but they have not yet been clearly defined.