Children of mothers who ate more fish and seafood during pregnancy will be more intelligent and have the capability development compared with children whose mothers ate little or none at all.

This is contrary to some researchers and government recommends pregnant women to limit seafood to avoid mercury, a toxin that can damage the nerve cells in the developing baby.

Chief researcher of the National Institutes of Health Dr. Joseph Hibblen who led the study in the Lancet Medical Journal said, seafood is a source of omega-3 fats, substances essential for infant brain development.

Researchers say, restrictions on pregnant women every week taking 12 ounces (340 grams) of fish and seafood, may endanger the baby because it would remove the essential nutrients needed for brain development.

"This is very surprising," said Hibblen. "We did not expect before clear whether harmful or not if you eat some seafood." The research found that more than 8,000 British women who followed came from the University of Bristol decided and see the state of children if their mothers ate more food than 12 ounces of fish and seafood.

When compared with children whose mothers ate seafood in small amounts, after having tested the speed of motor development, communication and social skills than his age. In addition these children to act beyond the seven-year-old child and had high language skills as eight years old.

Difference when they found the children whose mothers do not eat seafood. 48 percent chance that they are relatively more likely to have limited language compared with eight years of age whose mothers consume seafood. While environmentalists groups expect the government to help protect the environment seafood, such as chemicals and copper.