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  • Title: Studies of fish consumption as source of methylmercury should consider fish-meal-fed farmed fish and other animal foods.
    Author: Dórea JG.
    Journal: Environ Res; 2009 Jan; 109(1):131-2; discussion 133-4. PubMed ID: 19027108.
    Abstract:
    The co-occurrence of fish MeHg and omega-3 fatty acids in wild species can indeed be optimized by choosing certain species. Farmed finfish and shellfish that are fed fish-meal, however, can bioconcentrate both MeHg (in muscle) and organohalogen pollutants passed on in the fat components [Dorea, J.G., 2006. Fish meal in animal feed and human exposure to persistent bioaccumulative and toxic substances. J. Food Prot. 69, 2777-2785); when fish-meal is used to feed farm animals it may offer the worst of both worlds: saturated fat (with organohalogen pollutants) and MeHg. It is time to address the dietary sources of Hg derived from animals raised on fish-meal that may contribute to increase tissue Hg concentrations.
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