They are by definition an addictive product
Michael Siegel, a professor at the Boston University School of Public Health and a career anti-smoking researcher, notes that this obsession with minor differences represents a curious role reversal, with cigarette companies now reminding regulators that "indeed all cigarettes are hazardous and there is no such thing as a safer cigarette." "My opinion is that most, if not all of the substantial equivalence applications involve minor changes that have no substantial bearing on altering the public health significance or impact of the products," says Siegel
For example, have you ever used (and if so, do you now use every day, some days, or not at all) electronic cigarettes
Introduction Maternal smoking during pregnancy increases the risk for pregnancy complications, including placenta previa, placental abruption, and premature rupture of membranes, and adverse infant outcomes such as cleft lip and palate, infant death, stillbirth, preterm delivery, restricted fetal growth, and sudden infant death syndrome (SIDS) ( 1 )
