A study from UC San Francisco researchers shows that nonsmokers exposed to smoke in an automobile had increased levels of toxins and carcinogens.

“Ours is the first study to measure exposure to these particular chemicals in people exposed to secondhand smoke,” researchers explained. “This indicates that when simply sitting in cars with smokers, nonsmokers breathe in a host of potentially dangerous compounds from tobacco smoke that are associated with cancer, heart disease and lung disease.”

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