High-Mercury Fish

Fish is a great source of omega-3 fatty acids, which support fetal brain development, especially cold-water fish like salmon and sardines. Pregnant women are advised to consume 2-3 servings of fish each week for their own health as well as the health of their unborn child.

However, those who are expecting or who want to become pregnant within the following six months should take precautions when choosing the fish they eat. Fish can also be a source of mercury, which can harm a baby's growing brain and reduce your chances of conceiving again after being pregnant. Pregnant women, women planning a pregnancy and young children (up to six years) should avoid consumption of fish that contain high levels of mercury. Both male and female infertility are linked to higher blood mercury concentrations. Shark, king mackerel, tilefish, swordfish, and other fish with high toxic levels should be avoided.