This study involves 180 young adult vapers to understand how the brain reacts to anti-vaping messages. Vapers are people who use e-cigarettes. Participants will undergo a special brain scan called functional magnetic resonance imaging (fMRI), which helps researchers see how different parts of the brain work. This is part of a 1-year study where participants are randomly split into three groups. Two groups will receive weekly public messages about the dangers of vaping. One group sees regular messages, and the other sees messages focused on flavored vapes. After 6 months, these groups will switch the type of message they see. The third group won't see any messages. Everyone will fill out weekly online surveys and have check-ups every 3 months to confirm nicotine levels.

• The study is 1 year long with check-ups every 3 months.
• Participants will complete weekly surveys and may view anti-vaping messages.
• Participants must be young adult vapers, not smoking traditional cigarettes.

Participants will be recruited through various methods, including ads and university research pools. They will need to attend an in-person lab visit and be able to safely undergo an MRI scan.