WARNING!
This is an older article that may not reflect Dr. Mercola’s current view on this topic. Use our search engine to find Dr. Mercola’s latest position on any health topic.
In 2008, Mexico refused a shipment of U.S. beef. The meat exceeded Mexico's regulatory upper limit for copper. The meat was returned to the United States -- where it was sold and eaten.
Contamination of meat by heavy metals, veterinary drugs and pesticides is a problem which the U.S. government has for the most part ignored. And while bacterial contaminants can be killed by cooking, chemical residues stay in the meat.