The foods boosts fluid intelligence, which is the speed at which the brain works.
Eating organic food is linked to a higher IQ.
School-age children who ate more organic food had higher scores on tests of fluid intelligence and working memory.
Fluid intelligence refers to how quickly and effectively the brain processes information.
It is like the raw power of an engine or the speed at which a computer functions.
Working memory, meanwhile, is vital to holding pieces of visual, verbal or other information in your mind while you manipulate them.
Better working memory has been linked to improved learning, attention and other vital outcomes.
The higher levels of nutrients in organic foods may account for the boost to IQ, said Dr Jordi Júlvez, study co-author:
“Healthy diets, including organic diets, are richer than fast food diets in nutrients necessary for the brain, such as fatty acids, vitamins and antioxidants, which together may enhance cognitive function in childhood.”
In contrast, eating fast food, exposure to tobacco smoke and overcrowded living conditions were all linked to lower scores on tests of fluid intelligence.
Children’s brains are sensitive
The results come from over one thousand children aged 6 to 11 years old in six different European countries, including the UK and Spain.
The research examined 87 factors that the unborn child might be exposed to, along with another 122 factors that could affect them during childhood.
The brain is still developing in childhood, so it is particularly sensitive to toxicity.
Low levels of toxicity that may have little effect on the adult brain can still influence children’s brains.
Dr Jordi Júlvez, study co-author, explained the main predictors of higher IQ:
“In our study, we found better scores in fluid intelligence and working memory with higher organic food intake and lower fast food intake.”
As for the predictors of lower IQ, Professor Martine Vrijheid, study co-author, said:
“We observed that several prenatal environmental pollutants (indoor air pollution and tobacco smoke) and lifestyle habits during childhood (diet, sleep and family social capital) were associated with behavioral problems in children.”
Professor Vrijheid said the study is notable for its comprehensive examination of a wide range of variables:
“One of the strengths of this study on cognition and the earlier study on behavioral problems is that we systematically analyzed a much wider range of exposure biomarkers in blood and urine to determine the internal levels in the model and that we analyzed both prenatal and childhood exposure variables.”
Related
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- 12 Hidden Factors That Are Secretly Lowering Your IQ (P)
The study was published in the journal Environment International (de Bont et al., 2021).
