E-cigarette vapor damages the immune system of mice, study finds

E-cigarettes are being pitched as potentially safer alternatives to traditional tobacco cigarettes, but it's starting to look like they may share some of the same deleterious effects. A new study out of Johns Hopkins University looks at e-cigarettes' effects on mice, and it finds that exposure to their vapor limited of the mice's immune systems and impaired their lungs' ability to fight off viral and bacterial infections. They also found that the vapor contained harmful molecules known as...

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