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Cereal makers Kellogg's have said they'll use 'traffic light' labelling on their packs to show how much salt, sugar or fat it contains.

The colours green, amber and red- just like a traffic light - are a quick and easy way to know if a food item low, medium or high levels of salt, fat and sugar.

The government started the system in 2013 but as it's up to the company whether they use it, some don't.

But Kellogg's said it's now made the change after having "listened" to consumers, government and retailers.

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