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Fish

NEWS:

U.S. Streams Fail The Test: All Fish Found Contaminated With Mercury “The U.S. Geological Survey (USGS), recently completed a study of 291 freshwater streams across the United States, and to their dismay, 100 percent of the fish tested from these streams were found to be contaminated with mercury. "This study shows just how widespread mercury pollution has become in our air, watersheds and many of our fish in freshwater streams," said Interior Secretary Ken Salazar. Salazar might have also added the American food supply to that list, as last year researchers found that foods containing high fructose corn syrup, an all-too prevalent processed sweetner contained detectible amounts of mercury as well.”

ARTICLES:

What to Know About Omega-3s and Fish

JOURNAL ARTICLES:

An evaluation of mercury concentrations in three brands of canned tuna (Environmental Toxicology and Chemistry 2010) “Chunk white tuna (0.619 ± 0.212 ppm) and solid white tuna (0.576 ± 0.178 ppm) were both significantly (p < 0.001) higher in mean Hg than chunk light tuna (0.137 ± 0.063 ppm). No significant temporal variation was noted, and packaging had no significant effect on Hg concentration. In total, 55% of all tuna examined was above the U.S. Environmental Protection Agency's (U.S. EPA) safety level for human consumption (0.5 ppm), and 5% of the tuna exceeded the action level established by the U.S. Food and Drug Administration (U.S. FDA) (1.0 ppm). These results indicate that stricter regulation of the canned tuna industry is necessary to ensure the safety of sensitive populations such as pregnant women, infants, and children. According to the U.S. EPA reference dose of 0.1 µg/kg body weight per day and a mean Hg value of 0.619 ppm, a 25-kg child may consume a meal (75 g) of canned chunk white tuna only once every 18.6 d. Continued monitoring of the industry and efforts to reduce Hg concentrations in canned tuna are recommended.”

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