USA – E-cigarette vapor linked to cancer in mice

Mice exposed to e-cigarette vapor containing nicotine had an increased risk of developing lung cancer and pre-cancerous changes in the bladder. While these results can’t predict how e-cigarette vapor might affect people, they highlight the need for more studies into the potential toxicity of e-cigarettes

Tobacco smoke is known to be both addictive and toxic. It’s addictive because it contains nicotine, a chemical that stimulates the nervous system and causes physical dependency. It’s toxic because the smoke contains a host of compounds that can cause cancer and other health problems. Nicotine itself can be transformed into toxic compounds during the process of curing and burning tobacco.

In the past decade, e-cigarettes have been marketed as a less harmful alternative to smoking tobacco. But there is still much to learn about both the short- and long-term health effects of these products. In addition to nicotine, they contain other chemicals, including flavorings. Recently, concerns have been raised about the skyrocketing number of children and adolescents using e-cigarettes.

In previous work, researchers led by Dr. Moon-shong Tang from the NYU School of Medicine found that mice exposed to nicotine-containing e-cigarette vapor for 12 weeks showed DNA damage in their lungs, heart, and bladder. Their lung cells also showed a reduced capacity for DNA repair…