Monday, December 21, 2009

Humans and nonessential chemicals

This probably is not a severe concern but nevertheless interesting.

"Chemicals In People"

Toxic Substances: National biomonitoring report provides assessment of exposure to 212 substances


Britt E. Erickson

December 14th, 2009

Chemical & Engineering News

Americans are being widely exposed to polybrominated diphenyl ether (PBDE) flame retardants, perfluorinated chemicals such as those found in nonstick coatings on cookware, the plastics chemical bisphenol A (BPA), and many other chemicals found in everyday consumer products, according to the "Fourth National Report on Human Exposure to Environmental Chemicals." The report, released by the Centers for Disease Control & Prevention on Dec. 10, provides an extensive look at exposure to 212 chemicals, including 75 that have not previously been measured in a representative sample of the U.S. population.

The 75 chemicals new to the list include acrylamide (found in fried, starchy food); arsenic species and metabolites; endocrine disrupters such as BPA and the antimicrobial triclosan; perchlorate (found in rocket fuel); perfluorinated chemicals; PBDE flame retardants; and volatile organic compounds such as benzene, styrene, and the gasoline additive methyl tert-butyl ether.

The data are based on blood and urine samples collected from approximately 2,400 people who participated in CDC's National Health & Nutrition Examination Survey from 2003 to 2004.

The findings prompted Sen. Frank R. Lautenberg (D-N.J.), Chairman of the Senate Environment & Public Works Subcommittee on Superfund, Toxics & Environmental Health, to issue a statement highlighting the need to reform U.S. chemical law. "This study affirms that Americans are exposed to a wide range of industrial chemicals--including some that are known to cause cancer--and provides further evidence that America's broken chemical regulations must be fixed," Lautenberg stated.

Lautenberg is expected to introduce legislation next year to overhaul the Toxic Substances Control Act.

The American Chemistry Council, a trade group that represents the chemical industry, emphasized that the presence of a chemical in a person's blood or urine is not an indicator of health effects. "We now have the ability to measure minute amounts of chemicals," Cal Dooley, ACC President and chief executive officer, said in a statement. ACC stressed that the levels of all of the chemicals measured in the report remain low and that more research is needed to determine whether exposure at those levels is a health concern.

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