Monterey Fish explains that the above ocean fish should be avoided, and includes King mackerel, barracuda, marlin, conger eel, jacks and Gulf of Mexico tilefish. Similarly, steer clear of certain wild freshwater fish, as well, including whitefish, pickerel, pike, walleye and lake trout due to potential mercury contamination. However, here’s an interesting twist to the narrative.
In some cultures, fish is on the menu far more often than in the U.S., especially Japan, a relatively small nation entirely surrounded by water. In fact, it’s consumed four to five times more there than in the U.S. The people have regularly consumed the largest tunas they could catch for centuries, so it’s very likely they accumulated large amounts of methylmercury, apparently without causing problems. But there’s more:
“A number of studies have found that the essential element selenium, high amounts of which are found in ocean fish, sequesters mercury, thus neutralizing its toxic effects. This may be the reason why studies have never shown an epidemic of child developmental problems in coastal populations whose diets have been comprised in large part of seafood.”
Further, the omega-3 fatty acids in healthy seafood, namely fresh-caught Alaskan salmon, sardines, mackerel, herring and anchovies, are essential for your overall health. If you do not eat fish for whatever reason, I recommend that you take a quality supplement to supply it.
My best recommendation is krill oil, which is animal based and contains the highly crucial EPA and DHA omega-3s your body needs. EPA and DHA are important for your heart and brain, cellular and mitochondrial function, bone health and mood regulation, as well as for healthy fetal development and pregnancy.
On the other hand, methylmercury poses the greatest threat to the nervous system while unborn babies and newborns are developing — their brains, immune and nervous systems and retinas, in particular. It easily penetrates the placenta, where the mercury concentration in red blood cells may be 30 percent higher than in those of the baby’s mother.
Article Source: Dr Mercola at Mercola.com