smokeless cigarette cigarettes not as harmless as claimed, study says | Smoking Smokeless Cigarette Device To Quit
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The honest answer is: it depends on the device, but here's a real breakdown using the puff counts of popular UK kits

Just last year, sales declined by 7 percent, likely due to the rise of e-cigarettes and vapes

Retrieved from Boykan, R

The BMJ

10.1371/journal.pone.0195063 22

They can harm the brain In young people, the use of nicotine can impact the reward system in the brain
