E cigarettes are like a flamethrower of chemicals, says Natalie Gassman, Ph.D., who conducts cancer research at the MCI. Read more about her important work related to vaping, tanning and more in this E cigarettes are likely to cause cancer, including in the lungs and mouth, according to a sweeping review of scientific evidence that challenges their positioning as a safer alternative to smoking. There is New study comes the closest yet to proving that e cigarettes aren't as dangerous as smoking Can vaping cause cancer? The evidence suggests it might. The Washington Post Dangers of E Cigarettes