The research team, led by Harvard’s Dr. Emily Oken, wrote:
“The 28 mothers (8 percent) who reported eating canned tuna at least twice weekly had children with higher scores … compared with the 130 mothers (38 percent) who reported never eating tuna fish” while pregnant."“We next examined maternal fish intake and mercury levels simultaneously … Children whose mothers consumed more than two weekly fish servings and whose mercury levels were in the top decile also had somewhat higher scores, whereas children of mothers who consumed up to two weekly servings of fish and had mercury levels in the top decile had somewhat lower scores.” [emphasis added]
Translation: Among mothers with the highest mercury levels, those who ate the most fish (more than two servings per week) had children who performed above average on cognitive tests. High-mercury moms who ate less fish were the ones whose kids appear to be at a disadvantage. The key appears to be tuna. The most maligned fish in the sea, it turns out, is actually a comparatively low-mercury choice. We found as much in our 2006 fish-testing reports (see page 7 here, and page 10 here).
“Science doesn’t lie. Pregnant women who frequently eat canned tuna are having brainier children than those who don’t. Green groups have been demonizing tuna for years. Now it looks like they’ve been causing the very harm they sought to prevent.”
