As a parent, it’s terrifying to think your teen might be using marijuana—and even more so when you learn how dangerous it can be. A new article published in Scientific American underscores the growing evidence linking cannabis use in teens to psychosis, raising the stakes for families everywhere. With cannabis becoming legal for adults in more and more states, it’s showing up in homes, social circles, and even in schools. And while adults might be the intended users, teens are finding ways to access it too. That’s why understanding the real risks of teen marijuana use is more important than ever.

Cannabis and Teens

The Hidden Dangers of Teen Marijuana Use

Many people still think of marijuana as a “safe” drug. But when teens use it, the effects can be far from harmless. According to a 2023 Scientific American article, teens who regularly use cannabis are much more likely to develop serious mental health issues like psychosis. One major study in Canada followed over 11,000 teenagers and found that regular cannabis users were 11 times more likely to develop a psychotic disorder compared to nonusers (CAMH).

Why Teens Are at Greater Risk

Teen brains are still under construction. The prefrontal cortex—the part that controls decision-making, impulse control, and emotional regulation—doesn’t fully develop until the mid-20s. Introducing a powerful substance like THC during this time can disrupt brain development. That can lead to long-term problems with memory, mood, and even basic functioning (PubMed).

Legalization Has Made Pot Easier to Get—and Much Stronger

The legalization of marijuana and teen marijuana use has created unintended consequences. Even though cannabis is only legal for adults, teens are finding it easier to get their hands on it. And with more homes stocking marijuana products and a growing number of dispensaries, the exposure is everywhere. The National Institute on Drug Abuse (NIDA) reports that a large number of teens now view marijuana as low-risk, despite research showing otherwise.

What’s more, today’s marijuana is not what it used to be. THC levels in cannabis have skyrocketed in recent years. Back in the 1990s, marijuana typically had about 4% THC. Now? It’s common to see strains with 15% or more, and concentrates can hit a staggering 90% THC (NIDA). Higher potency is linked with more severe mental health effects, including hallucinations and full-blown psychosis.

It’s Not Just Smoking Anymore: Edibles, Vapes, and More

Cannabis isn’t just smoked in joints or pipes anymore. Teens are experimenting with:

• Edibles like brownies, gummies, and chocolates infused with THC.
• Drinks such as cannabis-laced sodas and teas.
• Pills and capsules that are easy to hide.
• Vape pens that look like USB drives but pack a potent punch.

Edibles, in particular, are risky because the effects take longer to kick in. Teens often think it’s not working and take more, leading to overwhelming or even dangerous reactions. And vaping? It’s fast, potent, and easy to conceal, making it a common choice for teen users.

Watch For These Red Flags

If you suspect marijuana use, you can observe your teen’s behavior for these “red flags:”  

• Sudden changes in mood or personality
• Withdrawing from family or longtime friends
• A drop in grades or motivation
• Red eyes, poor coordination, or unusual smells
• Paranoia, anxiety, or even hallucinations

These could be signs of cannabis abuse or even a developing marijuana addiction. Trust your instincts. If something feels off, it’s worth exploring further.

How The Ridge RTC Helps Teens Heal

At The Ridge RTC, we work with teens who are struggling, not just with marijuana use, but with the underlying emotional issues that often go with it. Whether your child is dealing with depression, anxiety, trauma, or just seems lost, our residential program offers a structured, supportive environment to get back on track.

We combine intensive therapy, outdoor experiential learning, and academic support to help teens develop confidence, resilience, and healthier coping skills. Most of all, we help them—and you—understand what’s really going on and how to move forward together.

You’re Not Alone, and Help Is Here

If your teen is using marijuana and you’re feeling overwhelmed or scared, you don’t have to go through it alone. Many families face this, and there is hope.
Contact us to learn how we can help your teen break free from marijuana use and build a healthier future.