From: http://www.medicalnewstoday.com/medicalnews.php?newsid=67500
Arsenic In Chicken Feed May Pose Health Risks To Humans, C&EN Reports
Pets may not be the only organisms endangered by some food additives. An
arsenic-based additive used in chicken feed may pose health risks to
humans who eat meat from chickens that are raised on the feed, according
to an article in the April 9 issue of Chemical & Engineering News, the
weekly news magazine of the American Chemical Society.
Roxarsone, the most common arsenic-based additive used in chicken feed,
is used to promote growth, kill parasites and improve pigmentation of
chicken meat. In its original form, roxarsone is relatively benign. But
under certain anaerobic conditions, within live chickens and on farm
land, the compound is converted into more toxic forms of inorganic
arsenic. Arsenic has been linked to bladder, lung, skin, kidney and
colon cancer, while low-level exposures can lead to partial paralysis
and diabetes, the article notes.
Use of roxarsone has become a topic of increasing controversy. A growing
number of food suppliers have stopped using the compound, including the
nation's largest poultry producer, Tyson Foods, according to the
article. Still, about 70 percent of the 9 billion broiler chickens
produced annually in the U.S. are fed a diet containing roxarsone, the
article points out.
Complicating the issue is the fact that no one knows the exact amount of
arsenic found in chicken meat or ingested by consumers who frequently
eat chicken. "Neither the Food and Drug Administration nor the
Department of Agriculture has actually measured the level of arsenic in
the poultry meat that most people consume," according to the article.
The National Chicken Council, a trade association that represents the
U.S. chicken industry, claims there is "no reason to believe there are
any human health hazards" associated with the use of roxarsone.