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FIGURE 2.. For the Japanese (n = 106) and Korean (n = 108) cohorts, individual hair mercury values plotted against individual docosahexaenoic acid (DHA) + eicosapentaenoic acid (EPA) values were obtained from the food-frequency questionnaire (FFQ) and from the fish consumption survey. All results are based on data from the FFQ and the fish consumption survey for each of the 2 populations. Sample size for FFQ results from the Japanese cohort was 105 because 1 participant had a calculated caroic intake <600 kcal/d. Sample size for FFQ results from the Korean cohort was 89. In total 19 data points wre not used; 1 woman had an incomplete survey and 18 women had calculated caloric intake <600 kcal/d. Beneficial and protective health effects values are indicated (400–500 mg/d DHA + EPA and 1.2 ppm hair Hg/d). DHA + EPA daily intake values considered beneficial were obtained from Gebauer et al (15), Akabas and Deckelbaum (22), and Kris-Etherton et al (32), which pertain to the American Heart Association's recommendation that persons consume 2 fish meals (preferably oily fish) per week. The mercury exposure values used in this study for the purposes of public health protection are the reference dose and its biometric equivalent of 1.2 ppm mercury in hair (1). Note: one data point in both panels depicted as hair mercury value was off the scale provided, and 1 and 3 data points in both panels, respectively, were not depicted because DHA + EPA intake values were off the scale.
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