Beefy hormones: New routes of exposure

In some areas of the country, like west Texas, water may play next to no role in exposures to hormone-laced feedlot wastes, according to Philip Smith of Texas Tech University in Lubbock.

Written by: Jessica Behnham

NEW ORLEANS On any given day, some 750,000 U.S feedlots are beefing up between 11 million and 14 million head of cattle. The vast majority of these animals will receive muscle-building steroids — hormones they will eventually excrete into the environment. But traditional notions about where those biologically active pollutants end up may need substantial revising, several new studies find.

They were reported at the annual meeting of the Society of Environmental Toxicology and Chemistry, which ended Monday.

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