General anxiety in teens predicted later substance use, but social phobia appeared to protect against it
In a Finnish adolescent cohort, general anxiety predicted subsequent alcohol and cannabis use (mediated by depression), while social phobia symptoms appeared to reduce persistent alcohol use.
Quick Facts
What This Study Found
Researchers followed Finnish adolescents aged 15-16 at baseline over two years to examine how anxiety related to substance use.
Anxiety preceded substance use, but no reciprocal effect was found (substance use did not predict anxiety). Depression mediated the relationship between anxiety and substance use.
General anxiety increased the incidence of frequent alcohol use and cannabis use. However, social phobia had a different pattern: it did not elevate substance use incidence and actually decreased the persistence of frequent alcohol use. The authors suggested social phobia may "protect" from substance use because socially anxious teens avoid the social situations where substance use typically occurs.
Frequent drunkenness was less strongly associated with anxiety than regular alcohol use or cannabis use.
Key Numbers
Baseline age 15-16 with 2-year follow-up. Anxiety preceded substance use (no reciprocal effect). Depression mediated the anxiety-substance use link. Social phobia decreased persistence of frequent alcohol use.
How They Did This
Longitudinal cohort study using the Adolescent Mental Health Cohort Study, a school-based Finnish survey. Baseline assessment at ages 15-16 with 2-year follow-up. Associations between social phobia, general anxiety, and substance use (alcohol, drunkenness, cannabis) analyzed for prevalence, incidence, and continuity.
Why This Research Matters
The contrasting effects of general anxiety versus social phobia on substance use had direct implications for prevention, suggesting that different types of anxiety require different intervention approaches.
The Bigger Picture
The finding that social phobia may actually protect against substance use challenged the common assumption that all anxiety disorders increase substance use risk through self-medication.
What This Study Doesn't Tell Us
Finnish adolescent sample may not generalize to all cultures. Self-reported substance use and anxiety symptoms. Cannabis use was described as smoked hashish of unknown composition. Two-year follow-up may miss longer-term patterns.
Questions This Raises
- ?Does social phobia continue to protect against substance use into adulthood?
- ?Would treating general anxiety in teens reduce subsequent substance use initiation?
Trust & Context
- Key Stat:
- Social phobia decreased persistence of frequent alcohol use in teens
- Evidence Grade:
- Longitudinal school-based cohort study with 2-year follow-up distinguishing between types of anxiety, but self-reported measures.
- Study Age:
- Published in 2011. Understanding of anxiety subtypes and substance use trajectories has continued to develop.
- Original Title:
- Associations of social phobia and general anxiety with alcohol and drug use in a community sample of adolescents.
- Published In:
- Alcohol and alcoholism (Oxford, Oxfordshire), 46(2), 192-9 (2011)
- Database ID:
- RTHC-00485
Evidence Hierarchy
Follows a group of people over time to track how outcomes develop.
What do these levels mean? →Frequently Asked Questions
Does anxiety cause teens to use drugs?
General anxiety predicted later substance use in this study, but the relationship was mediated by depression. Social phobia actually appeared to reduce some substance use, possibly because socially anxious teens avoid the social contexts where use occurs.
Do anxious teens self-medicate with cannabis?
The study found anxiety preceded cannabis use, consistent with self-medication. However, social phobia did not increase substance use, suggesting the self-medication model applies to general anxiety but not all anxiety types.
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Cite This Study
https://rethinkthc.com/research/RTHC-00485APA
Fröjd, Sari; Ranta, Klaus; Kaltiala-Heino, Riittakerttu; Marttunen, Mauri. (2011). Associations of social phobia and general anxiety with alcohol and drug use in a community sample of adolescents.. Alcohol and alcoholism (Oxford, Oxfordshire), 46(2), 192-9. https://doi.org/10.1093/alcalc/agq096
MLA
Fröjd, Sari, et al. "Associations of social phobia and general anxiety with alcohol and drug use in a community sample of adolescents.." Alcohol and alcoholism (Oxford, 2011. https://doi.org/10.1093/alcalc/agq096
RethinkTHC
RethinkTHC Research Database. "Associations of social phobia and general anxiety with alcoh..." RTHC-00485. Retrieved from https://rethinkthc.com/research/frojd-2011-associations-of-social-phobia
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkTHC research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.