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Since chewing tobacco doesnt require combustion, people believe that using tobacco leaves as a way to consume tobacco protects them from the harmful risks of cigarette smoking

Sometimes just walking through a designated smoking area will leave your clothes smelling like cigarettes

Gray says

As an initial pilot effort, the betel year is a starting point, with further studies needed to explore the carcinogenic potential of other additives globally and refine the metric for wider use

As for nicotine strengths, they provide different levels to suit varying preferences, ranging from high nicotine concentrations for those seeking a stronger hit, to lower or even zero-nicotine options for those looking to reduce their nicotine intake