Eating These Snacks During Pregnancy Could Help Your Child Become Smarter

If you want a smart child, a recent study has suggested that eating these snacks during pregnancy can help with this.

Scientists from the Barcelona Institute for Global Health (ISGlobal) discovered that women who ate three 30g servings of these nuts (walnuts, hazlenuts, peanuts, almonds or pine nuts) had better scores in cognitive function, attention and memory tests.

Nuts are known to help reduce the risk of hypertension, oxidative stress and diabetes and they may exercise a protective effect against cognitive decline in older age.

To this list of beneficial health effects, we can now add new evidence from a study led by the Barcelona Institute for Global Health (ISGlobal), an institute supported by “la Caixa”.

The study, published in the European Journal of Epidemiology, found links between a maternal diet rich in nuts during the first trimester of pregnancy and improved neurodevelopment in the child.

The study was carried out in Spain and included over 2,200 mother and child pairs enrolled in cohorts belonging to the INMA Project located in Asturias, Guipuzcoa, Sabadell and Valencia.

Information on maternal nut intake was obtained from questionnaires on eating habits, which the mothers completed during the first and last trimester of their pregnancy.

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The children’s neuropsychological development was assessed using several internationally validated standard tests 18 months, 5 years, and 8 years after birth.

Analysis of the results showed that the group of children whose mothers ate more nuts during the first trimester of pregnancy obtained the best results in all the tests measuring cognitive function, attention capacity and working memory. Florence Gignac, ISGlobal researcher and first author of the study explains:

“This is the first study to explore the possible benefits of eating nuts during pregnancy for the child’s neurodevelopment in the long term. The brain undergoes a series of complex processes during gestation and this means that maternal nutrition is a determining factor in fetal brain development and can have long-term effects.

“The nuts we took into account in this study were walnuts, almonds, peanuts, pine nuts and hazelnuts. We think that the beneficial effects observed might be due to the fact that the nuts provided high levels of folic acid and, in particular, essential fatty acids like omega-3 and omega-6.

These components tend to accumulate in neural tissue, particularly in the frontal areas of the brain, which influence memory and executive functions.”

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The benefits described in this study were observed in the group of mothers who reported the highest consumption of nuts–a weekly average of just under three 30g servings.

This is slightly lower than the average weekly consumption recommended in the healthy eating guide published by the Spanish Society of Community Nutrition (SENC: Guía de la alimentación saludable), which is between three and seven servings per week. Gignac further explains:

“This makes us think that if the mothers consumed the recommended weekly average the benefits could be much greater”.

The study also analysed the mothers’ nut consumption during the third trimester of their pregnancy, but in this case either no associations were observed with the neuropsychological outcomes or the associations found were weaker.

Jordi Júlvez, ISGlobal researcher and last author of the study also explains:

“This is not the first time we have observed more marked effects when an exposure occurs at a specific stage of the pregnancy.

While our study does not explain the causes of the difference between the first and third trimesters, the scientific literature speculates that the rhythm of fetal development varies throughout the pregnancy and that there are periods when development is particularly sensitive to maternal diet.

In any case as this is the first study to explore this effect, we must treat the findings with caution and work on reproducing them in the future with more cohort studies as well as randomised controlled trials.”

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It seemed the first trimester was key though, because the same observations could not be made for women who snacked on nuts later on in their pregnancies.



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