For pregnant women, diets rich in fish can offer their babies protection against developing behaviors associated with attention-deficit/hyperactivity disorder, or ADHD, a new study finds. Yet for most Americans, fish consumption is the leading source of exposure to mercury , which has been linked to a host of health problems, including delays in neural development. However it depends on what kind of fish you eat that determines how much mercury you will consume. After checking different hair samples from different woman it was determined that the higher the level of mercury present, the more diseases the child has/showing signs of. The fish that were proved to have the most amount of mercury present in them are tuna, swordfish, and shark while salmon and cod tend to pick up less toxic metal from the environment. Woman with more than 1 microgram of mercury present were in danger of giving the disease to their children no matter how much fish they actually ate. So basically, if one was to eat only one fish with high levels of mercury, their children would be in as much danger as another mother who ate multiple fish dishes. It all depends on the level of mercury present in the fish. In this study it is revealed that boys are more sensitive to mercury posioning than girls are.
http://www.sciencenews.org/view/generic/id/345639/description/Fish_in_moms_diet_may_alter_kids_behavior
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