Its hard to isolate the effects of nicotine from those of tobacco, but animal and laboratory studies suggest nicotine could be responsible for cognitive and behavioral changes including addiction in people who begin using it as youths
OConnor said repeat offenders keep breaking the law, because its so lucrative to avoid the countys cigarette tax

said cigarette tip (2) has one of its ends filled with filtering material constituting the filter (1), and its another end is connected with one end of the cylindrical body (5) in the middle of which are ventholes (12), the cavity between the cigarette tip (2) and the cylindrical body (5) is a flavour medium cylinder (13) filled with the fillings, inside the cylindrical body (5) is the control valve at the one end close to the cigarette tip, the control valve is connected with an inner cylindrical body (4), inside the inner cylindrical body is an electrically conducting front inner plate (16) having a hollow hole, the end of the inner cylindrical body (4) close to the end of the cigarette tip is in the form of opening like an upset trumpet over which there is an upper cover (3) accordant with its form, magnetic rings (14) are set at the bottom of the upper cover and at the root of the trumpet of the inner cylindrical body (4), the two magnetic rings have opposite magnetic poles, the middle portion of the upper cover (3) is fixed with one end of the "T" or the "" shape conducting wire (15) going through the central hole of the inner plate (16), the other end of the cylindrical body (5) has its inner side a fork-shape splint (7), a power source (8) and a lamp socket (9), on the splint (7) is fixed an integrated circuit module controlling the light-emitting mechanism, the power source (8) is a button battery connected with a conducting wire, the lamp socket (9) is cylindrical, in the middle of which are two small holes used as the fixed holes of the two poles of the light-emitting part (11), the end portion of the cylindrical body (5) is connected with the cap cover (10)

Credit: NHS UK | What happens when you quit smoking
Further, the authors of the Pediatrics study note that these numbers are based on self-reported data presumably, calls from concerned parents to poison control centers
Associations between vaping during pregnancy and perinatal outcomes: A systematic review and meta-analysis