Recent results of health examinations on the general population in cadmium-polluted and control areas in Japan.
Health examinations by a revised method aimed at detecting renal tubular dysfunctions more effectively were conducted on the general population aged 50 years and over in cadmium-polluted areas (1826 persons) and control areas (1611 persons) in four prefectures in Japan in 1976. Although detailed analysis of the data is not yet completed, some of the results obtained are described here. The prevalence of glucosuria and low molecular weight proteinuria, frequency of decreased % TRP, and cadmium concentrations in urine are higher in the cadmium-polluted areas than in the controls. Clinically diagnosed cases with tubular dysfunctions seem to follow the same trend as above, though these cases are very few in number and they are limited to the advanced age group. When cadmium concentration in rice is taken as an index, a dose-response relationship is not necessarity explicit in the observations by prefecture. However, suggestive data are obtained in the observation by district in one cadmium-polluted area.[1]References
- Recent results of health examinations on the general population in cadmium-polluted and control areas in Japan. Shigematsu, I., Minowa, M., Yoshida, T., Miyamoto, K. Environ. Health Perspect. (1979) [Pubmed]
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