The amount of sugar in cereals - particularly those marketed at children - has remained consistently high since 1992 despite significant cuts to salt content in the same products, a study has found.
Salt levels in popular breakfast cereals sold in the UK since 2004 have decreased by about 50% owing to a successful reduction programme to meet incremental targets, according to the research in the journal Public Health Nutrition.
However in "stark contrast" sugar content in the same cereals has remained high, with some containing up to 35%, the study by Action on Sugar and Consensus Action on Salt and Health (Cash) found.
The study of 63 children's cereals in 2015 found that a typical 30g serving contained a third of a four- to six-year-old's maximum daily recommended amount of sugar of five teaspoons.
The report warned, however, that cereals still remained a major contributor to salt intake and said it was vital that the government revived the national salt reduction programme to protect as many people as possible from strokes and heart disease.
And it said "more can and should be done to reformulate, with an urgent need to set incremental sugar reduction targets".
Kawther Hashem, a registered nutritionist for Action on Sugar at Queen Mary University of London and an author of the study, said: "There has been no national sugar reduction programme, as there has been for salt, which is imperative if we want to see real and measurable improvements.
"The variation in sugar content between similar products clearly demonstrates there is no technical reason whatsoever why cereals contain such high levels of sugar.
"Public Health England is due to announce a major national sugar reduction programme, as part of the Government's Childhood Obesity Plan, in March 2017. All manufacturers must support the programme and start reducing sugar now."
Graham MacGregor, Professor of Cardiovascular Medicine at Queen Mary University of London and Cash chairman, said: "Manufacturers should be congratulated for making significant reductions to the salt levels, thanks to a structured salt reduction programme.
"However further reductions are needed as cereals remain far too high in salt, and are still a major contributor to salt intake.
"Reducing salt is the most cost effective measure to lower blood pressure and reduce the number of people suffering from strokes and heart disease - one of the commonest causes of death in the UK."
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