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1: Sci Total Environ. 1992 May 15;116(3):243-51.
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Geochemical prospection of cadmium in a high incidence area of prostate cancer, Sierra de Gata, Salamanca, Spain.

García Sánchez A, Antona JF, Urrutia M.

Department of Mineralogy and Geochemistry, I.R.N.A.-C.S.I.C., Salamanca, Spain.

A high incidence of prostate cancer was observed in some areas of Salamanca province, Spain. After excluding the most common etiological factors as the cause, it is concluded that the only possible risk factor must be due to the presence of some environmental carcinogen. In view of the etiological relationship between Cd and the pathological state, a study was carried out on the geochemistry of this element in the area. Anomalous amounts of Cd were found in stream sediments. This anomaly does not correspond to human activity, but rather to high regional amounts of cadmium in the substrate. Thus, the contents of Cd in soils developed over substrates containing naturally-occurring anomalous amounts of cadmium and the concentration in underground waters should be considered as a risk factor in this area.

PMID: 1615308 [PubMed - indexed for MEDLINE]