know the facts ,save lives😱😱 . 1. Erythrosine, also known as Red 3, is the most controversial dye. Male rats given erythrosine had an increased risk of thyroid tumors (23Trusted Source, 24Trusted Source). 2. Red 40, Yellow 5 and Yellow 6 that are known cancer-causing substances. Benzidine, 4-aminobiphenyl and 4-aminoazobenzene are potential carcinogens that have been found in food dyes 3. Red Dye 40, also known as Allura Red, is another commonly used food dye. 4. While research is still prelim