A new study suggests that an omega-3 fatty acid called EPA may help improve reading, concentration and memory in children.
Four overweight children aged between eight and 13 were given a supplement containing EPA for three months. At the end of this period, it was as if their brains "were the brains of children three years older," according to Imperial College researcher, Professor Basant Puri, quoted in this article.
Some experts have criticized the study saying it was not large enough and the results are inconclusive.
Until larger studies are carried out, I'm hedging my bets by giving my son a supplement containing omega-3 fatty acids, and I'm also ensuring he doesn't eat junk food.