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Cadmium exposure and prostate cancer: insights, mechanisms and perspectives.

Cadmium (Cd) is a metal found in group 12 (IIB) of the periodic table of elements together with zinc, a metal with which it is often conjugated in nature. Occupational exposure to Cd occurs in many industrial settings, by cigarette smoking, diet and due to environmental pollution. International Agency for Research on Cancer and other epidemiological studies suggested that Cd can lead to prostate cancer and likely to kidney and lung cancers. Although epidemiological studies seem to point towards such an association, the in vitro studies have not been compelling. The aim of this article is to summarize current knowledge about the association of Cd exposure and prostate cancer, that suggests that new studies to show the role of Cd in the pathogenesis of prostatate cancer.