Nicotine and tobacco are, unfortunately, villains
Users report less lingering cigarette smell on their hands, hair, and clothing compared to traditional cigarettes, along with fewer stains on their teeth
Any weight effect mainly comes from two pathways: Appetite signals in the brain Nicotine can influence appetite-regulating signals in the brain, which can temporarily reduce hunger and increase feelings of fullness in controlled settings (summarized in a review on nicotines effects on appetite and energy expenditure)
LaFaive, Todd Nesbit, and Scott Drenkard, Cigarette Taxes and Smuggling: A 2016 Update, Mackinac Center for Public Policy, Dec
People generally know that smoking is harmful but tend to underestimate just how much, said Dr Sarah Jackson, a principal research fellow at UCLs alcohol and tobacco research group