Medium Concern

Caramel Color

Flagged by IARC + Consumer Reports as a process contaminant 4-MEI is a possible carcinogen (IARC 2B) concern

What it is

The most widely used food coloring worldwide. When made with ammonia (Class III and IV caramel), it produces 4-methylimidazole (4-MEI), which California lists as a carcinogen.

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