Content and dietary exposure of cadmium among residents in Northeast China: a case study based on the 5th China Total Diet Study
2020
Wei, Junxiao | Cen, Kuang
Cadmium (Cd), one of the harmful heavy metals, and its accumulation or pollution might cause itai-itai disease. In this study, we investigated the dietary exposure of Cd among residents in Northeast China (including Heilongjiang, Jilin, and Liaoning provinces) and also compared the health risks in adult males in terms of dietary intake. Cd contents in 12 categories of foods were derived from original data from the 5th China Total Diet Study (TDS). The following results were obtained in this study: (i) dietary exposure levels of Cd at the margin of safety (MOS) were 4.55, 1.82, and 2.85 in Heilongjiang, Jilin, and Liaoning provinces, respectively; (ii) the primary dietary sources of Cd included cereals, legumes, potatoes, meat, aquatic products, and vegetables; (iii) Cd contents in the same food category from different regions were not significantly different from the limit of China’s National Standards (LCNSs); (iv) dietary exposure of Cd would not have a detrimental effect on the health of residents in Northeast China; (v) we recommend the government to take precedence of the supervision and spot-checking of cereals, legume-nuts, potatoes, meat, aquatic products, vegetables, and alcoholic beverages because of the higher dietary consumption than others; (vi) 99.99% of the Cd content in cereals, legumes, vegetables, meat, and aquatic products sold in Northeast China was less than the LCNSs at the present situation; and (vii) the harmful effects of Cd to human beings are associated with the Cd content in foods and the consumption of such foods.
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