If an apple a day can keep the GP at bay, so too a bowl of cereal in the morning can perhaps keep the children alert through the day.
Cereal at breakfast cuts the inevitable decline in performance throughout a day by more than half, dieticians at the King’s College of London say. They have reviewed several earlier studies on the issue.
Their conclusion is that a low glycaemic index (GI) wholegrain breakfast, such as porridge, muesli or bran enriched cereal can remarkably improve the concentration of the child. A high GI breakfast, such as white toast, in contrast, fails the test.
The researchers pinpointed a study of schoolchildren who were given a cereal breakfast and were compared over four days with those who had a glucose drink or no breakfast at all.
Dr Katrina Campbell, one of the reviewers, said: "Consuming breakfast cereal reduced the deficit to attention and for some aspects of memory prevents the deficit altogether."
Skipping breakfast altogether was found to reduce the ability to recall a word list and a story read aloud.
It also cut performance on visual perception and spatial memory, verbal fluency and academic performance.
Studies which looked at students who took part in school breakfast programmes achieved a significant increase in maths grades and much less days off or late attendances.
The review showed a general agreement in the literature that breakfast can have a positive effect on 'brain performance' when compared to not having breakfast.