The Oxford University study of 500 children indicates that it may help to add foods like salmon and walnuts to the table that are rich in omega-3 fatty acids, which are essential building blocks for a healthy brain.
After taking blood samples from the children between the ages of seven and nine, scientists found that levels of omega-3 fatty acids "significantly predicted" their ability to concentrate, and learn, the New York Daily News reported.
Presented at a conference in London last week, the study found that higher levels of omega-3, particularly the long-chain form of Docosahexaenoic acid (DHA), were associated with better reading and memory and fewer behavioral problems among the children examined.
Omega-3 fatty acids have been shown to play an important role in the brain's structure and cognitive function, in addition to heart health and the immune system.
Dietary sources of omega-3 include fatty fish such as sardines, mackerel, salmon and tuna as well as flaxseed oil and walnuts.
The study is published in the journal PLOS One.