A recent study at Columbia found casual teenage use of marijuana increased risks for depression and suicidal behavior, as well as problem behaviors such as truancy, poor grades, and trouble with law enforcement. The researchers found that about 2.5 million teens were casual users. Casual users were up to 2.5 times more likely than non-users to have behavioral and mental health problems.
Facts on Teenage Weed Use
In 2022, 1.2 million adolescents ages 12-17 began using marijuana for the first time. According to the Substance Abuse and Mental Health Services Administration (SAMHSA), 6.4% of 12-17-year-olds (4.3 million people) used marijuana in the past month in 2022.
It’s also important to note that, in 2017, among adolescents aged 12-17 who used marijuana, 22% were depressed. A psychiatric disorder, particularly depression, also may increase the risk of marijuana abuse. According to SAMHSA, some adolescents (5%) had marijuana use disorder in 2022, which means they experienced adverse consequences of their drug use and yet couldn’t give the drug up.
How Marijuana Is Used Is Changing
Adolescents aged 12-17 used various means to ingest marijuana in 2022; the most popular was smoking (77%), followed by vaping (60%). (Some teens used multiple routes but chose the route with the greatest dose of THC delivered to the brain in the shortest time.) Overall, there’s not much difference between smoking and vaping, as inhalation is highly addicting—pharmacologically, like intravenous injection. Also popular was eating or drinking the drug (36%) or using dabbing waxes and concentrates (23%). Some adolescent users applied marijuana in a lotion, cream, or skin patch or used drops, lozenges, strips, and other means of administration.
Reducing Risk for Psychosis From Marijuana
It is known that marijuana use may lead to psychiatric issues and even psychosis. In an article by Benedikt Fischer and colleagues, the authors explored key issues linked to an increased risk for a psychotic break in adolescents who use marijuana. For example, early use of marijuana (at age 16 or younger) was a risk for psychosis and thus should be avoided. They also noted that high-potency marijuana increases the risk of psychosis and should be avoided by adolescents. (However, teenagers may perceive high-potency marijuana as even better than “regular” marijuana.)
Frequency of use was another risk factor for psychosis, such as weekly or daily use, with those using the drug daily at elevated risk for serious psychiatric problems such as psychosis. In addition, individuals who use other addictive substances in addition to marijuana, such as tobacco, alcohol, and illegal drugs, have a greater risk for psychosis, as well as a worse outcome, such as more frequent treatment relapses or worse cognitive symptoms.
Individuals with traumatic events in their past risk psychosis with marijuana. There is also a genetic component; if biologically related family members became psychotic after marijuana use, this may mean adolescents are at risk and likely should avoid the drug altogether.
Sometimes, marijuana affects how well psychiatric treatment drugs work; for example, individuals who receive antipsychotic medications may find their medication’s efficacy reduced when they use marijuana.
Adolescent Marijuana Users May Become Lifelong Consumers
Some purveyors of marijuana perceive adolescents as highly attractive consumers. “It shouldn’t surprise us THC is sold as gummy bears or ‘Krondike’ bars, or that vaping fluids with flavors like pineapple or mango come in thinly disguised packages that attract young people,” says Deepak Cyril D’Souza, Albert E. Kent Professor of Psychiatry at the Yale School of Medicine and a leading expert on the pharmacology of cannabinoids. “The idea is if you have a young customer, you have a lifelong customer.”
Driving and Adolescent Weed Use
It’s illegal for anyone to drive under the influence of marijuana, although state laws vary considerably. The point is that some teenage marijuana users do drive under the influence. A 2017 study found that nearly half of adolescent drivers had driven a vehicle after using marijuana, and 1 in 8 (12.5%) reported driving under the influence of marijuana in the past month.
Teenagers may perceive driving under the influence of marijuana as safer than driving while intoxicated with alcohol; however, driving under the influence of any mood-impairing drug is dangerous. In addition, most adolescents are inexperienced drivers who need their mental acuity to decrease the risks of poor judgment causing car crashes. It is also important to avoid being a passenger in a car where the driver has ingested marijuana; individuals should refuse to enter a car in that situation. Admittedly, such a refusal may be difficult in the face of social pressure but it may be a life-saving choice.
Conclusion
The United States is confronting a public health crisis of substance use disorders and overdose deaths. We need to refocus and reenergize prevention and educational initiatives and support psychiatric treatment alternatives for youth. Addiction often begins with use in the teenage years, and 90% of all adults with substance use disorders began using alcohol, nicotine, or marijuana before age 18. Also, using any one substance (alcohol, nicotine, marijuana) significantly increases the likelihood of using the other two. A growing body of scientific evidence shows that even a one-year delay in drug use during adolescence can lower future trajectories of use for years to come. Brain researchers believe teenagers are extremely vulnerable because adolescent and young adult brains are still developing. Although marijuana is perceived as harmless by many, the dangers outlined in my prior post are amplified with much more dire consequences in youth.
Also note that there is some good news: A growing percentage of teens are using little or no alcohol, nicotine, marijuana, or other drugs. This approach should be encouraged for teens and young adults to help them reduce risks, develop to their full potential, and not join the adult SUD and overdose risk group. Even among less frequent users, we should encourage longer non-use periods. Lastly, improved mental health access for adolescents in the United States is urgently needed.
