University of Minnesota researchers say they have found evidence that non-smokers absorb the carcinogen N-N-K if they live or work in smoke-filled rooms. The study found small amounts of the carcinogen in nine non-smoking hospital workers who cared for patients in a designated smoking area. Mayo Clinic Physician Tom Kottke says even though only eighteen people total were involved in the study -- nine exposed to second-hand smoke and nine who weren't -- it's of immense value.
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