According to a report by Julian Mellentin, director of The Centre for Food & Health Studies, there remains considerable scope for expansion in the functional food market aimed at children, particularly in the dairy sector.

In the report, Mellentin claims probiotics, omega-3s and calcium are the three areas in which "the most significant success stories are being made."

"The dairy industry's ambition to innovate with more and more new ingredients seems to be growing increasingly bolder. No other food or beverage category has played such an important role in driving the functional food revolution in Europe, South America and Asia," he explained.