Categorizing Vaping Intensity Among Youth.

Adolescent addiction to e-cigarettes affects learning, memory, and attention. However, it is unknown whether the intensity of use, puffs per month, differs from frequency, days of use per month, and in relation to addiction measures. This study provides evidence that high-intensity use characterized by puffs per month has a stronger association with cravings compared to frequency, which suggests puffs per month may be a better measure of nicotine exposure. This new intensity metric may give insights into youth e-cigarette use patterns, addiction, and appropriate treatment of intense but intermittent users.