Brain is the one of the first organs to develop in the embryo and it continues to change and mature for a person entire life.
All 1 billion nerve cells present in an adults brain have been created by the time fetus is six months old. But all these neurons are not connected to each other with the advancement in age the neurons and the intelligence of the human brain increases.
Each part of the brain activates and starts to function at a certain age like between ages 13 to 15 brain size and functions increases especially in motor and spatial perception areas of frontal cortex and other improvements.
Because of this process there is a major debate that nature and nurture conditions in which kid has been brought about has a great influence in their character and attitude. Hence foods which provide good nutrition and sufficient minerals to the brain are important to involve in children diet.