Walmart said on Friday that it would end sales of e-cigarettes at its locations in the United States, as medical concerns about the effects of vaping rise along with sicknesses and deaths seemingly linked to the habit.“Given the growing federal, state and local regulatory complexity and uncertainty regarding e-cigarettes, we plan to...

Electronic cigarette devices may weaken the immune system and make users more susceptible to contracting infections. In a study published in the medical journal PLOS ONE on February 5, researchers found that mice exposed to e-cigarette vapor are more at risk of becoming infecting with viral and bacterial infections....

A Consumer Reports study indicates a large and growing number of poison calls relating to e-cigarettes used by children under the age of five. Throughout the United States, poison control centers have received 1,571 calls relating to nicotine exposure through June 2014. In 2013, 1,414 calls concerning nicotine exposure were logged...