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Eating fish has this hidden benefit

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Tokyo :Eating fish during pregnancy ensures a balanced intake of fatty acids essential for the normal brain formation of the unborn child, a new study has found.

The findings provide an explanation for the correlation between eating fish during pregnancy and the health of the baby’s brain, researchers said.

Dietary lipid contains fatty acids such as omega-6 and omega-3, which are essential nutrients for many animals and humans.

Researchers led by Noriko Osumi from Tohoku University in Japan found that a balanced intake of lipids by pregnant women is necessary for the normal brain formation of the unborn child.

In an animal study, the researchers found that when female mice were fed an omega-6-rich/omega-3-poor diet, their offsprings were born with a smaller brain and showed abnormal emotional behaviour in adulthood.

This is significant because people in many countries these days have similarly poor dietary patterns and tend to consume more seed oils that are rich in omega-6 fatty acids and less fish rich in omega-3 fatty acids.

The brain abnormality found in the offsprings of mice used in the study, was caused by a premature ageing of foetal neural stem cells that produce brain cells, Osumi said.

The premature ageing was promoted by an imbalance of oxides of omega-6 and omega-3 fatty acids. The offsprings also showed higher anxiety levels, even though they were raised on nutritionally optimised diets from an early lactation period.

A diet that contains a good balance of omega-6 and omega-3 fatty acids is known to improve the development of brain functions; this is based on earlier researches that evaluated the effects of maternal intake of an omega-3-poor diet on brain function in children.

The study took this premise further and focused on the effects of dietary lipids on the brain formation. The results show why omega-6 and omega-3 balance is important for future brain function, and reinforces earlier suggestions that more fish intake by women during pregnancy can advantageously affect the child’s health.

PTI

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