Cola food colouring is cancerous

Some chemically enhanced caramel food colourings used in popular cola drinks could be cancer causing and should be banned, a US consumer advocacy group has claimed.

Pure caramel is made from melted sugar, but two other versions approved to colour food products include chemical ammonia and produce compounds shown to cause various cancers in studies of animals, according to a statement of the Centre for Science in the Public Interest (CSPI).

The group is petitioning the Food and Drug Administration (FDA) to ban the ammonia-containing caramels, which are also used in other dark-coloured soft drinks.

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