Marijuana use among teens in the United States is more common than many people realize. In a recent survey of our entire grade conducted by me, of those who responded, 60.7 percent of students said they had tried marijuana, and an even higher 85.7 percent reported being offered it at some point. These numbers show how normalized marijuana has become in teenage life. Many students said their main reason for trying it was curiosity or a desire to explore something new. It might seem harmless in the moment, but for developing brains, the effects can be more serious than they appear.
To learn more about how marijuana affects teenagers, I spoke with our school nurse, Mrs. Paula Butt, who has worked with students for many years. She explained that the teenage brain is still developing, especially the areas responsible for decision-making, memory, and emotional control. She said, “THC, the main chemical in marijuana, can interfere with how brain cells connect and communicate.” This means that marijuana can change the way a young person’s brain grows and functions. Over time, that interference can make it harder to concentrate, remember information, and think clearly.
Mrs. Butt explained that marijuana’s short-term effects include slower reaction time, impaired judgment, distorted perception, anxiety, and paranoia. These effects can make everyday activities like driving, studying, or playing sports more difficult and even unsafe. The long-term effects can be even more concerning. Regular use of marijuana has been linked to lower IQ scores, difficulty staying motivated, mental health problems such as depression or anxiety, and sometimes dependence or addiction. She also pointed out that teens who use marijuana regularly tend to have lower grades, more absences, and higher dropout rates.
Research from several respected organizations supports these observations. The American Addiction Centers report that marijuana use among adolescents can negatively affect attention, memory, problem-solving, and relationships while also increasing the risk of mood disorders. The Mayo Clinic warns that frequent or early use can lead to marijuana use disorder, a form of dependence that can make it hard to stop. Harvard Medical School adds that marijuana has a strong effect on the frontal lobe, the part of the brain responsible for thinking and impulse control. It also notes that modern marijuana is much stronger than it was in past decades, which makes its effects more intense and unpredictable.
Beyond the science, Mrs. Butt emphasized how important prevention and support are in reducing teen marijuana use. She said that parents, teachers, and friends can make a difference by starting honest conversations, setting clear expectations, and encouraging positive activities like sports, music, or volunteering. When teens feel supported and connected, they are less likely to turn to substances. She also mentioned that many young people assume marijuana is safe just because it is legal for adults in some states, which can lead to misunderstanding its real risks. “Just because something is legal does not mean it is safe 
for a developing brain,” she said.
Her final message to students was powerful and clear. “Your brain is still under construction,” she said. “Marijuana can interfere with how it grows and functions. Protecting your brain now helps you think clearly, make good choices, and reach your goals.”
With marijuana use becoming so common among teens, understanding the truth about its effects is essential. By combining awareness, research, and open communication, students can make better choices for their health, education, and future. Knowing the risks is not about fear; it is about giving young people the information they need to make smart, informed decisions that help them stay focused on who they want to become.
