DoseStreaks
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Pregnancy and children

Teenagers – talking about alcohol, vaping and drugs

Scare tactics reliably fail and can backfire. What works better, and the South African context that makes these conversations urgent.

Why the usual approach fails

One-off warnings, exaggerated claims and shock imagery are the most-used approach and among the least effective. Teenagers discount a source that overstates, and once they catch one exaggeration they discount everything else that source said — including the parts that were true.

Adolescents are also not primarily motivated by long-term health risk. Consequences decades away are abstract; consequences this month are not.

What works better

  1. Start early and repeat briefly, rather than delivering one big talk. Short, calm, recurring conversations land better than a set piece.
  2. Be accurate, including about the limits of what is known. Credibility is the asset you are protecting.
  3. Lead with near-term consequences that actually matter to them: sport performance, appearance, money, sleep, being taken advantage of, losing a licence, a criminal record.
  4. Talk about situations, not substances. 'What would you do if the driver had been drinking' is more useful than a lecture about alcohol.
  5. Agree a no-questions-tonight exit — a call or a code word that gets them collected with the conversation deferred. This one thing prevents a lot of harm.
  6. Listen more than you talk, and do not interrogate. A teenager who expects a lecture stops volunteering information.

The South African context

  • Alcohol is the substance that causes by far the most harm to South African teenagers, through injury, road deaths, violence and sexual risk rather than through long-term liver disease.
  • Binge drinking is the dominant pattern here, which is what makes a single occasion dangerous rather than only a long habit.
  • Vaping has spread quickly among school-age teenagers, and many devices deliver very high nicotine doses. Most teenagers who vape want to stop and find they cannot.
  • Cannabis is legal for private adult use in South Africa, which many teenagers read as evidence it is harmless. Regular use in adolescence is associated with poorer educational outcomes and with mental health problems in those already vulnerable.
  • Locally, cheap mixed drugs are a serious risk in some communities, and their contents are unknown by definition.

Warning signs, and what to do

  • A sudden change in friendship group, secrecy, or money going missing.
  • Declining school attendance or marks.
  • Losing interest in things they used to care about.
  • Changes in sleep, appetite or weight.
  • Mood swings beyond the usual range, or withdrawal from the family.

None of these prove substance use — they overlap heavily with depression and anxiety, which is itself worth knowing. Start with a calm, direct, non-accusatory conversation, and involve a clinician or the school counsellor rather than handling it alone.

Common questions

Should I let my teenager drink at home to demystify it?
The evidence does not support it. Supplying alcohol to adolescents is associated with earlier and heavier drinking rather than more moderate drinking, and in South Africa it is illegal to supply alcohol to anyone under 18.
What if I used substances myself at that age?
You do not owe a full account, and detailed war stories tend to be heard as permission. A brief honest acknowledgement plus what you would do differently is usually more credible than either a lecture or a confession.
My teenager is vaping. What now?
Treat it as an addiction question rather than a discipline one — most want to stop and cannot. A clinic or pharmacist can help, and nicotine replacement is an option for adolescents under clinical guidance. Confiscation alone rarely ends it.

Sources

Last reviewed 4 August 2026.