Pregnant women away from four species

United States food and Drug Administration warned pregnant women and plans to pregnant women, to avoid eating shark, mackerel, swordfish and square fish, because the four mercury species may affect fetal growth and development of the brain. Worth noting is that tuna did not because of the mercury content of less was included in the scope of maternal fasting. But those who are responsible for formulating regulations on mercury believed that women who eat a lot of canned tuna during pregnancy is bad in some areas, already limits the amount of tuna per week for women during pregnancy shall not be more than 198 g. This warning is mainly targeted at pregnant women, but it also reminds the mother and child care taken not too much consumption of four species of fish mentioned earlier.

The nutritive value of fish is very high, however some fish will accumulate different amounts of mercury, which is a harmful to the natural elements. After the mercury into the body of pregnant women, can damage the central nervous system of the fetus, causing poor baby\'s cognitive ability. To avoid ingestion of excessive mercury, pregnant women can try to eat different kinds of fish per week, not set to eat a, average volume does not exceed 340 grams of fish per week not to worry about eating too much mercury.