Changes in knowledge, perceptions and use of JUUL among a cohort of young adults.

Introduction:
This text summarizes a study examining changes in knowledge, perceptions, and use of the e-cigarette brand JUUL among a cohort of young adults over a six-month period. The study also explored changes in knowledge of JUUL's nicotine content, risk perceptions, and exposure to JUUL advertising, and examined associations with current JUUL use.

Key Points:

* The study found that ever and current JUUL use doubled in six months.
* There was a significant increase in the number of days a JUUL pod lasts.
* although there was an increase in those reporting JUUL has as much or more nicotine than a pack of cigarettes, 58% are 'not sure' of JUUL’s nicotine content.
* Exposure to JUUL’s advertising significantly increased.
* Those perceiving JUUL as or more harmful than cigarettes, and former and never cigarette smokers had significantly lower odds of current JUUL use at six months compared with their respective counterparts.
* Those reporting exposure to JUUL’s advertising had significantly increased odds of current JUUL use six months later.

Main Message:
The study highlights the importance of understanding why and how young adults use e-cigarettes, including JUUL, as they are not without risk. The findings suggest that efforts are needed to regulate retail advertising and ensure consumer education about product risks as they are associated with current use. additionally, the study demonstrates the need for frequent measurement of knowledge, perceptions, and use of e-cigarettes, including JUUL, as they can change rapidly.

Wagoner KG, King JL, Suerken CK, Reboussin Ba, Cornacchione Ross J, Sutfin EL. Changes in knowledge, perceptions and use of JUUL among a cohort of young adults. Tobacco control. 2021;30(6):638-643. doi:10.1136/tobaccocontrol-2020-055651