Brominated chemicals

Bromine is a highly-reactive chemical element, a halogen in the same class as chlorine and iodine.

Potassium bromate is added to dough when making bread and baked goods to increase its volume and improve its texture. The compound is considered a possible human carcinogen; rats fed potassium bromate had a higher rate of thyroid and abdominal cancers, according to a summary by the International Agency for Research on Cancer.