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However, these bulk expression changes are a composite of all cell type gene expression changes, cell frequency shifts, and emergent metaplastic cell states, making it impossible to determine the precise cellular and molecular changes induced by smoke exposure using this type of expression data

That's because nearly all (more than 99%) e-cigarettes contain nicotine, and some brands (such as Juul) contain an excessive amount

Research on the long-term respiratory effects of hemp smoking is still limited, and we are not in a position to claim that hemp cigarettes are a healthy choice

Caffeine, essential oils, and vitamin B12 have become popular additives in e-cigarettes