E-CIGARETTE USE

This study aims to see if e-cigarettes or oral nicotine pouches work better to help persistent smokers reduce their cigarette smoking. Researchers will enroll 200 adult smokers who have tried to quit before but haven't succeeded. Participants will be randomly assigned to use eith…

This study is adapting a proven counseling program to help young adults (ages 18-30) quit using e-cigarettes and other nicotine products. Researchers will test if counseling delivered by video call or phone is more helpful than just a self-help guide. The goal is to help particip…

This study is testing if a prescription medication called varenicline, which helps people quit smoking cigarettes, is also effective for helping adults quit using e-cigarettes. Researchers will randomly assign 326 adults who vape daily to receive either the real medication or a p…

This study is testing a brief, 30-minute online program designed to help young adults (ages 18-24) who vape reduce their e-cigarette use and lower their interest in starting to smoke cigarettes. Researchers will compare the program to a control group over 8 weeks to see if it wor…

This study aims to understand how making cigarettes very low in nicotine, along with changes in e-cigarette and illegal cigarette prices, might affect what people buy. Researchers will use a virtual marketplace to see if these policies lead to more purchases of illegal cigarettes…

This study aims to understand how e-cigarette use affects blood vessel function in young adults, and whether these effects differ between men and women. Researchers will examine 80 healthy participants aged 18-24, comparing chronic vapers with non-users. They'll use skin blood ve…