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Blood Toxins

Only Available in Archive Formats.
Blood Toxins

Blood Toxins

Blood Toxins

Only Available in Archive Formats.

For the first time, the Centers for Disease Control and Prevention has taken blood samples from a cross-section of Americans to look for a number of toxic substances. These substances show up in pollutants from industry and in products like cigarettes. NPR's John Nielsen reports some good news; chemicals from second-hand smoke seems to be appearing in blood less frequently. There's worrisome news too; there are lots of other chemicals in our blood about which we know very little.