Sugar limits for everyday foods such as biscuits, chocolate bars and cereals have been published by public health officials in a bid to make UK children more healthy.
Public Health England is challenging businesses to cut sugar by 20% by 2020, and by 5% this year.
It says the food industry should try lowering sugar levels, reducing product size or pushing healthier products.
But experts question how the targets can be enforced.
Children are consuming three times more sugar every day than they should, which can lead to weight gain and obesity.
Currently, one in five children are overweight or obese when they start primary school and by the time they start secondary school that rises to one in three.
This increases their risk of type 2 diabetes, heart disease and some cancers in adulthood.
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