They dont produce tar, carbon monoxide, or other toxic substances associated with burning tobacco
Nicotine is especially addictive when smoked or otherwise taken into the lungs because "the onset of the stimulant-like effects occurs very rapidly through this route of administration," David Ledgerwood, a clinical psychologist in the Substance Abuse Research Division at Wayne State University in Detroit, Michigan, told Live Science in an email
FDA has a list of 111 HPHCs found in tobacco products and tobacco smoke and/or aerosol that are linked to cancer, cardiovascular disease, respiratory conditions, reproductive problems, and addiction
This is an interesting stage that tunes your receptors for the upcoming pleasure
The table below shows what each one treats and what abrupt stopping can trigger, so the reason for a taper is clear before you reach the detail on each