Signs Your Teen May Be Using Drugs or Alcohol: A Parent’s Guide

When You Start to Wonder If Substances Are Involved

Changes in your teen’s behavior, mood, or friend group can raise quiet questions in the back of your mind: Could drugs or alcohol be part of this? It is normal to feel anxious about the answer and unsure how to respond.

Possible Warning Signs

Warning signs can include secretive behavior, new friends you do not know well, the smell of alcohol or smoke, red or glassy eyes, changes in sleep or appetite, missing money, slipping grades, or a sudden loss of interest in activities.

Behavior as a Clue, Not a Verdict

No single sign proves substance use, but a pattern of changes can be a clue that it is time for a calm, honest conversation. Your goal is not to catch your teen—it is to understand what they are experiencing.

How to Talk Without Exploding

Choose a time when you are relatively calm. You might say, I’ve noticed some changes lately and I’m worried about you. Can we talk about how things have been going? Listening first, instead of leading with accusations, makes it more likely your teen will open up.

Next Steps If You’re Concerned

If you believe your teen is using substances, consider a medical or counseling evaluation. There are many levels of support available, from outpatient therapy to more structured programs. You do not have to face this alone, and your teen does not either.