Journal
PUBLIC HEALTH NUTRITION
Volume 14, Issue 3, Pages 480-489Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S1368980010001485
Keywords
Methylmercury; Diet; Fish; Fishermen; Baltic Sea
Funding
- Academy of Finland [77008, 205324, 206950, 124286]
- Academy of Finland (AKA) [124286, 124286] Funding Source: Academy of Finland (AKA)
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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 HQ 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) mu g/l among men and 2.8 (< 0.15-20) mu g/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. Conclusions: The study shows that, besides fish, Me may have other dietary sources that should be taken into account in risk assessment studies. Due to the observed high blood Me Hg concentration, a thorough exposure assessment among the general Finnish population is recommended.
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