Researchers from the United Kingdom and Canada found an association between foods high in fat and sugar and slightly reduced IQ. Using questionnaires that asked how often parents fed their children junk food, the researchers found that children whose dietary patterns consisted of fatty, sugary foods at age 3 had a lower IQ at age 8-1/2 than their peers who ate a lot more nutritious foods.So it turns out IQ is a measure of the experiences one has had in life. Telling us a fact we already knew, that enriching life experiences and education makes you smarter. Wow.
1'Do Fatty, Processed Foods Lower Children's IQ?' - ABC