In a short but sharp Screenagers Bites video, Professor David Jernigan challenges a belief that still comes up again and again, the idea that letting young people drink at home teaches them to drink safely. Research points in the opposite direction. Young people who grow up in permissive homes tend to have more alcohol related problems later, including during college years, while those from homes with clearer boundaries tend to have fewer problems. The notion that problems arise because alcohol was previously forbidden does not hold up when tested against evidence.

Jernigan also underlines something that is often uncomfortable but hard to ignore. The strongest influence on a young person’s drinking is not peers or parties, but their parents. What adults do, not only what they say, matters. If we are worried about young people’s drinking, we need to look honestly at our own habits and what we model at home. Setting boundaries is not about mistrust or punishment, but about providing structure that young people actually expect from adults.

The wider context matters too. Alcohol is not a neutral product circulating in a vacuum, but part of a global industry worth around 1.8 trillion dollars a year, with billions spent annually on marketing, including through social media and algorithm driven systems. As Jernigan notes, we have learned from decades of experience with tobacco that relying on industry goodwill is not enough. Protecting young people requires clear parental boundaries and a realistic understanding of the commercial forces shaping their environment.

Find more from ScreenAgers (USA, December 2025)