Chronically malnourished children are on average nearly 20 per cent less literate than those who have a nutritious diet and it can adversely impact on the economic growth of a country, according to findings of a British charity, 'Save the Children'.
The study sheds new light on how missing out on nutritious food can impact on a child's cognitive development and its far-reaching effects on economic growth.
'Save the Children' applies estimated losses of income, on a country by country basis, to predicted per capita incomes.
"The results of the analysis suggest that by the time today's stunted children reach working age, they will cost the global economy USD 125 billion overall," the report observed.
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Malnourished children could earn as much as 20 per cent less in adulthood and the economic cost of micronutrient malnutrition is estimated between 0.8 per cent and 2.5 per cent of GDP in India - equivalent to USD 15-46 billion.
"These findings confirm our very worst fears - that poor nutrition is capable of seriously damaging a child's life chances before he or she even sets foot in a classroom," it said.
"We have made huge progress in tackling child deaths, but having a quarter of the world's children at risk of under-performing at school will have grave consequences for the fight to end global poverty," said 'Save the Children' chief executive Justin Forsyth.
"We want to see funding for countries suffering the highest burden so that millions of children's lives can be transformed," he added.
British Prime Minister David Cameron is to host a nutrition summit in London on June 8 in the lead up to this year's G8 summit in Northern Ireland.
Britain's leading charities and faith groups, including Save the Children, have launched the "Enough Food for Everyone IF" campaign - the world's biggest push to end world hunger.