VDA#5
http://www.sciencenews.org/view/generic/id/345639/description/Fish_in_moms_diet_may_alter_kids_behavior

1.http://www.betterhealth.vic.gov.au/bhcv2/bhcarticles.nsf/pages/Mercury_in_fish

2.Mercury is a metal that occurs naturally at low levels in rock, soil and water throughout North Carolina. Mercury is also released into the air, water and land when fossil fuels (coal, oil and natural gas) are burned. Mercury is often found in fish. Mercury pollution is released into the air and then falls directly into water bodies or onto land, where it can be washed into waterways. When mercury gets into water, bacteria can change it into a form called methylmercury, which is absorbed by tiny aquatic organisms. When fresh water and ocean fish eat those organisms, the mercury begins to build up in their bodies. You can be exposed to methylmercury by eating contaminated fish.Methylmercury during pregnancy can impair a baby's growing brain and nervous system.The more mercury that gets into a person's body, the longer the exposure time, and the younger the person, the more severe the effects are likely to be. It also binds to a person's tissue proteins (such as muscle). Food processing, preparation and cooking techniques don’t significantly reduce the amount of mercury in fish. In my opinon the one way to avoid mercury in fish is just not eating it at all. Most studies show the way to avoid mercury found in fish is by eating fish with low mercury, but if you keep consuming fish that contains even a little the mercury  well develope one by one.There are many healthy choice for you and your unborn baby during pregnacy.