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Another possible explanation is what researchers call common liability, when people who take up vaping are already more inclined to smoke cigarettes

However, this is not conclusive, and more research is needed to determine the long-term effects of secondhand marijuana exposure, including whether repeated secondhand exposure could contribute to dependence or addiction

Pre-existing forest parks were transferred to the Department of Conservation in 1987 and became conservation parks, but have retained the designation forest park

Researchers also found that in many cases, the added flavor exacerbated the detrimental effects of e-cigarette vapor and concluded that both vaping and conventional cigarette smoking negatively impact lung biology (10)