Why Pregnant Women Should Avoid Tuna

All fish contain small amounts of methylmercury, the most toxic form of mercury, and “fish consumption represents the main source of methylmercury exposure.” In my videos Nerves of Mercury and Fish Fog, I discuss how mercury exposure through fish consumption, even within the government’s safety limits, can have adverse neurological and behavioral effects on child development. Severe exposure can cause overt structural brain abnormalities like microcephaly, a shrunken brain disorder. But we didn’t know whether low exposure could also affect brain size until recently. http://nutritionfacts.org/2014/10/30/why-pregnant-women-should-avoid-tuna