Exposure assessment and initial intervention regarding fish consumption of tribal members of the Upper Great Lakes Region in the United States

Author Name: 
Dellinger, J. A.
Publication Date: 
Friday, November 12, 2004
Private File Attachment: 
The previous Gerstenberger and Dellinger research was continued in this report. This is a much larger study than most in this bibliography. In the case of the Akwenanase Mohawk only 130 or so were interviewed. In the Dellinger study over 800 people from the Ojibwe were studied on their effects of mercury and polychlorinated biphenyl (PCB) residue analyses as body burden indicators of these persistent environmental pollutants. In this case Walleye fish were studied, notably the consumption of Walleye by Ojibwe people, the Ojibwe were given the job of collecting these fish for use in the study. The key factors studied were cancer mortality ratios and birth gender ratios. Dellinger et al analysis was that: “Compared to other studies of subsistence fishing populations, these exposures were only moderately elevated and not high enough to warrant widespread restrictions on diets.” Why? According to Dellinger “elenium from two traditional diet sources (wild rice, with low amounts, and fish, with an average of approximately 0.5 ppm) may mitigate the adverse effects of mercury and may be a natural buffer.” Other studies were planned on the effects of elenium, and why the contamination did not appear to effect the Ojibwe, were due to genetics, lifestyle, or environmental factors.