Chemical process during the manufacture of the caramel coloring used in soft drinks such as cola produces a carcinogen that could be raising the risk of cancer to above the accepted threshold of one extra case in every 100,000 people consuming the drinks, suggests an analysis. The risk associated with Daily Intake of Soda Raises Cancer Risk.
Matching laboratory tests conducted by Consumer Reports on 11 different soft drinks, first reported last year
, with an analysis of average consumption by Americans, the researchers found that one can a day could be enough to expose them to potentially cancer-causing levels of the chemical known as 4-MEI (short for 4-methylimidazole).
The potential carcinogen is formed during the manufacture of the familiar caramel color that is added to many widely-consumed beverages.
A law in California requires that drinks must carry warning labels if they contain enough 4-MEI to pose an excess cancer risk of more than 1 case in every 100,000 exposed people (an exposure of 29 mcg of 4-MEI every day).
Here in Nigeria you can find the Regulation on Caramel coloring by checking NAFDAC
website for details.