> Until 2012, chickens in the U.S. were given compounds of arsenic to prevent certain diseases and to make the meat plump and pink

I was curious exactly what happened in 2012:

https://web.archive.org/web/20111229174314/https://www.fda.g... (2011)

> FDA announced that Alpharma, a subsidiary of Pfizer Inc, will voluntarily suspend sale of the animal drug 3-Nitro (Roxarsone) in response to a new FDA study of 100 broiler chickens that detected inorganic arsenic, a known carcinogen, at higher levels in the livers of chickens treated with the drug 3-Nitro (Roxarsone) than in untreated chickens. FDA officials stress that the levels of inorganic arsenic detected were very low and that continuing to eat chicken as 3-Nitro is suspended from the market does not pose a health risk.

> 3-Nitro® (Roxarsone) is an arsenic-based animal drug, manufactured by Alpharma LLC, a subsidiary of Pfizer Inc. It is approved to help prevent coccidiosis when used in combination with certain animal drugs. Coccidiosis is a parasitic disease that infects the intestinal tracts in poultry and can lead to death in poultry

> detected inorganic arsenic … at higher levels … chickens treated with the drug … than in untreated chickens

More than 0 seems like a lot in untreated chickens.