(SAN FRANCISCO CHRONICLE) — Coca-Cola, America’s most popular soda, said it will adjust the formula of its caramel color to keep from having to label the soda with a cancer warning to comply with California regulations.

“The company did make the decision to ask its caramel suppliers to make the necessary manufacturing process modifications to meet the requirement of the State of California,” Coca-Cola told NPR.

The additive in question, a compound called 4-MI or 4-MEI (long name: 4-methylimidazole), has been the target of a campaign by consumer groups to ban it, claiming it causes cancer.

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