Modern Marijuana
Today’s marijuana is far more potent than in the past. Decades of selective breeding have significantly increased levels of tetrahydrocannabinol (THC), the compound responsible for marijuana’s psychoactive effects. Between 1995 and 2015, THC levels rose by roughly 200%, and they may be even higher today. Because THC drives both the “high” and many of the risks, increased potency raises the likelihood of negative effects and addiction.
Cannabis, Dependency, and Addiction
Local data from Taney and Stone counties shows marijuana is often viewed as a low-risk substance, comparable to alcohol or e-cigarettes. More than 20% of respondents to our April 2024 Community Assessment Survey confirmed that they had used non-medical marijuana within the past 30 days. Many believe misuse carries little to no consequences or may even result in health benefits. In reality, cannabis use can lead to addiction, known as Cannabis Use Disorder (CUD).
Research shows that between 20% and 30% of regular cannabis users will develop CUD. Only 9% of casual cannabis users will develop CUD, but this percentage increases to 17% of users who begin using cannabis before the age of 15. Among daily users, 25%-50% of users develop CUD; higher potency and frequent use significantly increase these risks.
Marijuana Misuse and Teens
Marijuana’s Increased availability has led to greater exposure among teens, many of whom lack accurate information about both short- and long-term effects. Educational tools—such as the Tips for Teens series—can help parents and educators start informed conversations.
Tips for Teens: Marijuana (PDF)Effects on the Developing Brain
Marijuana impairs brain function, especially memory, learning, attention, decision-making, coordination, and emotional regulation. These effects are strongest in young people and long-term users. Because the brain develops into the mid-to-late twenties, early use can disrupt this process, with long-term consequences becoming more apparent over time.
Adults who began using marijuana as teens often show reduced brain connectivity, affecting memory, impulse control, and habits. Early, long-term use is also linked to cognitive decline, including IQ drops of up to eight points, along with lower life satisfaction, strained relationships, and reduced achievement.
Marijuana use is also associated with mental health risks. Regular use is linked to higher rates of anxiety and depression and may worsen conditions like schizophrenia, especially in those at risk. It also impairs judgment and lowers inhibition, increasing the likelihood of risky behaviors such as impaired driving and unsafe sexual activity.
Effects on the Body
Although marijuana is often considered safer than tobacco, it is not harmless. Smoking marijuana can damage the lungs, causing airway inflammation and symptoms similar to chronic bronchitis, including persistent cough, mucus buildup, and shortness of breath. Long-term users—especially those who start young—face higher risks of respiratory infections and reduced lung function over time. Marijuana may also affect the heart. While research is ongoing, evidence suggests it can temporarily increase the risk of heart attack and stroke while under the influence.
Protect Your Future
For young people, the risks of marijuana misuse outweigh any potential benefits. Like alcohol or tobacco, the negative effects may not be immediate—but they are real and increase with continued use. There is no completely safe level of misuse. Protect your health and your future. If you or someone you know is trying to quit, reach out to a trusted adult or seek professional support. Help is available—and it’s worth it.