The influence of electronic cigarette age purchasing restrictions on adolescent tobacco and marijuana use.

Objective: In the United States, many states have established minimum legal purchase ages for electronic nicotine delivery systems (ENDS) to ban adolescent purchases, but these policies may also affect other related substance use. We explore whether ENDS are substitutes or complements for cigarettes, cigars, smokeless tobacco, and marijuana among adolescents by using variation in state-level implementation of ENDS age purchasing restrictions.

Methods: We linked data on ENDS age purchasing restrictions to state- and year-specific rates of adolescent tobacco and marijuana use in 2007-2013 from the Youth Risk Behavior Surveillance System.

The effect of potential electronic nicotine delivery system regulations on nicotine product selection.

Aims: To estimate the effect of potential regulations of electronic nicotine delivery systems (ENDS) among adult smokers, including increasing taxes, reducing flavor availability and adding warning labels communicating various levels of risk.

Design: We performed a discrete choice experiment (DCE) among a national sample of 1200 adult smokers. We examined heterogeneity in policy responses by age, cigarette quitting interest and current ENDS use.

A Practitioner's Guide to Electronic Cigarettes in the Adolescent Population.

We present guidance on electronic nicotine delivery systems (ENDS) for health care professionals who care for adolescents. ENDS provide users with inhaled nicotine in an aerosolized mist. Popular forms of ENDS include e-cigarettes and vape-pens.