Blood concentration of methylmercury in relation to food consumption
2011
Airaksinen, Riikka | Turunen Anu W. | Rantakokko, Panu | Mannisto, Satu | Objective Dietary fish is the main source of methylmercury (MeHg) for man, and fish consumption has been used as a measure of MeHg exposure. However, other dietary sources of exposure exist and MeHg metabolism may also be modified by nutritional factors. The aim of the present study was to examine the association between blood MeHg concentration and consumption of different foods in a Finnish population with high fish consumption. Design Blood samples, a detailed FFQ and additional frequency data on fish consumption were collected. MeHg was analysed from whole blood by the isotope dilution method with high-resolution MS. The consumption of different foods was calculated by MeHg quartiles and tested for linear trend. Setting Finnish southern and south-western coast of the Baltic Sea. Subjects Two hundred and ninety-nine professional fishermen, their spouses and other family members.Results Mean (range) blood MeHg concentration was 4·6 (0·21–22) μg/l among men and 2·8 (<0·15–20) μg/l among women. Fish had the strongest positive association with MeHg (P for linear trend <0·001 among both men and women). Among men, positive associations were also observed for fruit vegetables, wheat and wine. Among women, positive associations were observed for root vegetables, legumes, potato and game, but adjustment for fish consumption attenuated these trends | Turunen, Anu W. | Rantakokko, Panu | Mannisto, Satu | Vartiainen, Terttu | Verkasalo, Pia K.
Objective Dietary fish is the main source of methylmercury (MeHg) for man, and fish consumption has been used as a measure of MeHg exposure. However, other dietary sources of exposure exist and MeHg metabolism may also be modified by nutritional factors. The aim of the present study was to examine the association between blood MeHg concentration and consumption of different foods in a Finnish population with high fish consumption. Design Blood samples, a detailed FFQ and additional frequency data on fish consumption were collected. MeHg was analysed from whole blood by the isotope dilution method with high-resolution MS. The consumption of different foods was calculated by MeHg quartiles and tested for linear trend. Setting Finnish southern and south-western coast of the Baltic Sea.Subjects Two hundred and ninety-nine professional fishermen, their spouses and other family members. Results Mean (range) blood MeHg concentration was 4·6 (0·21–22) μg/l among men and 2·8 (<0·15–20) μg/l among women. Fish had the strongest positive association with MeHg (P for linear trend <0·001 among both men and women). Among men, positive associations were also observed for fruit vegetables, wheat and wine. Among women, positive associations were observed for root vegetables, legumes, potato and game, but adjustment for fish consumption attenuated these trends.
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