School children could be given regular doses of omega 3 supplements in an effort to improve behaviour and concentration.

Reports suggest that the government is waiting for the Food Standards Agency's review into the benefits of omega 3 and will make its decision depending on the outcome.

Education secretary Alan Johnson said: “The FSA is conducting a systematic review of research looking at the effect of nutrition and diet on performance and behaviour of children in schools. This includes investigating studies that have used Omega 3 and 6 supplements in schools.”

He added: “While this work is not yet concluded, we will examine its results with interest.”