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However, know that switching to e-cigarettes or vapes is not the answer

One challenge researchers have faced in exploring a link between marijuana use and lung cancer arises from the fact that many people who smoke marijuana also smoke cigarettes, making it difficult to understand the relative contribution of each behavior to lung cancer risk

The World Health Organization says that tobacco kills over 8 million people around the world every year, both directly and via secondhand smoke

(1996, October)

7,11 In contrast, the incidence of lung cancer in women has been gradually increasing, and the cause of this rise is not entirely clear

They acknowledge vaping is likely less harmful but emphasize that "less harmful" doesn't mean "harmless," and they warn against using vapes as a gateway product for non-smokers