A critical review of the evidence up to now existing has found to be no conclusive evidence that says if the intake of the fatty acid Omega-3 by pregnant mothers in order to promote the brain development of children.
“There are many clinical tests done with women have taken omega 3 and there were very different results”, said the coordinator of the study Jacqueline Gould, the Women’s and Children’s Health Research Institute, Adelaide, Australia, “we have found that non c’è been no positive or negative effect on the development of the view or of the neurological system of the child.”
The australian team, which has published its results on January 30, onthe American Journal of Clinical Nutrition, has analyzed data from 11 clinical studies in which 5,272 that people have received, in the form of random (random) the Omega 3 or took a placebo during the second halfà of their pregnancy.
In the various studies examined, the dosage of Omega-3 taken by the mothers is varied from 240 to 3,330 mg / day and età where è been controlled, brain development and the development of sight in children has been included among the newborn up to seven years of età.
The authors say that on the one hand many of the trials included too few participants to distinguish subtle differences expected from nutritional studies, and excluded the risk pregnancies (in which, perhaps, it would be possible to see large differences) and who have not followed children long enough during development.
“our analysis highlights that more research is needed,” explained Gould to Reuters Healt
The Omega-3 is essential for a healthy brain development of the fetus and is commonly found in fatty fish, such as tuna, mackerel and sardines.
The human brain and eyes contain large amounts and categories of docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), both forms of Omega-3.
The fetuses in the womb can get DHA from the fat reserves of their mothers, and from foods and supplements consumed during pregnancy.
The hope that omega-3 supplements might enhance brain development stems from a large study carried out in Denmark, in which many mothers have reported that eat more fish and have had thereforeò children with greater neurological development and motor milestones in the first months.
The author of the study, dr. Sjurdur Olsen, head of the Center for Fetal Programming in Copenhagen, cautions, however, that in Denmark, the mothers who eat more fish tend to be more educated and wealthy, both of factors that could be important in the development of a child.
Other studies have found that in a pregnant woman the intake of fish oil does not increase the IQ of the child or enhance the visual development of your child. (source: Health Reuters story of September 29, 2011.)
However, the international organisations, including the Authoritiesà European Food Safety authority and the World Organisation of the Sanità, approve, and promoting the use of Omega-3 for expectant mothers, noted Harry Rice, vice president of regulatory affairs and scientific at the global Organization for EPA and DHA Omega-3 (a business organization editor’s note).
“because of the science that many organizations and government agencies around the world recommend DHA for pregnant and lactating women”, Rice told Reuters Health in an email.
it Might be too early to reach a definitive conclusion on this topic, explained Elvira Larqu of the Università of Murcia in Spain, who has done an independent review of clinical studies on DHA in a 2012 study.
Elvira Larqu agreed that are required, the più studies. In those analyzed in the new report, there are various weaknesses, including the fact that not all sources of DHA were recorded in the diets of the mothers, and that the tests for measuring intelligence is based on tests the subjective, as, for example, the observation of a child playing with a toy.
Olsen said the discrepancy between official support for mothers, so thaté take the DHA in the prenatal period, and the real evidence of their positive effects, is derived, probably, from a pious desire.
“people want to have some good news,” he said. “C’è a strong desire to have simple means for obtaining effects of the strong.”
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