A new study called the Avon Longitudinal Study on the effect of food on IQ claims that a diet high in processed (junk) food given at an early age can lower s child’s IQ.The brain develops rapidly between the ages of 0- 3 years and needs sufficient nutrients to grow.
The Bristol study, carried out on 1,400 children is suggesting that diets high in sugar,fat and processed food can affect brain performance in late childhood. However eating nutrious food packed with vitamins and minerals can boost mental performance later on. Journal of Epidemiology and Community Health