The degree of connectivity of a neuronal network in the rat brain before nicotine exposure can help predict nicotine dependence severity after nicotine exposure as well as reversal of dependence after a period of abstinence.
People’s decisions to use e-cigarettes, as well as perceptions about associated risks, are influenced by the e-cigarettes’ nicotine levels and available flavors. The influence of these characteristics on decision-making and perceived risk differs between people who smoke cigarettes and people who do not smoke.
The number of children (ages 3 to 11 years) in the United States who are exposed to tobacco smoke decreased steadily from 1999 to 2014. However, childhood tobacco smoke exposure differs among sociodemographic groups.
Smokers who switch to cigarettes with very low nicotine content may experience mild and transient increases in some withdrawal symptoms. Cigarettes with reduced nicotine will be easier to quit than the cigarettes marketed at present.
The Strengthening Families Program for Youth 10-14 (SFP10-14), an evidence-based intervention that reduces teen substance use, also reduced participants’ friends’ substance use. Two factors that accounted for the nonparticipants’ reductions were less time spent by nonparticipants with their participating friends without adult supervision and improvements in nonparticipants’ attitudes toward substance use. The findings suggest that researchers should consider the potential for diffusion of benefits in designing and implementing prevention programs.