How Many People Use Marijuana in 2024? A Deep Dive into the Stats

Marijuana has become a hot topic in recent years as laws and attitudes surrounding cannabis use continue to evolve. But exactly how many people use marijuana in 2024? What are the trends among adults versus teens? And how does marijuana affect health and brain function?

In this comprehensive guide, we‘ll explore the latest research and statistics to answer key questions around marijuana use in America today. My goal is to provide you with an in-depth look at the data, insights from experts, and analysis to understand the marijuana landscape.

Let‘s dive in!

Marijuana Use Overview

First, a high-level overview of the key marijuana use statistics in 2024 among Americans aged 12+:

• 49.6 million used in the past year (17.9% of the population)
• 22.2 million used in the past month (8.3%)
• Daily or near-daily use is around 2-3% of the adult population
• Past-year use highest among 18-25 year-olds at nearly 30%
• Past-year use around 35-40% for high school seniors

So those are the topline numbers. Marijuana use has risen steadily over the past decade as laws and attitudes have relaxed. Let‘s analyze the data in more detail.

Current Rates of Adult Marijuana Use

In 2020, 49.6 million Americans aged 12 or older reported using marijuana in the past 12 months according to the National Survey on Drug Use and Health. This equates to 17.9% of the population in this age group.

Here is a breakdown of past-year marijuana use rates among adults aged 18+:

• 18-25 years old: 29.8%
• 26-34 years old: 19.8%
• 35-49 years old: 14.1%
• 50-64 years old: 9.2%
• 65 years and older: 2.9%

Younger adults aged 18-25 have significantly higher usage rates compared to older demographics. However, marijuana use has risen across all adult age segments over the past decade:

Age Group	2010	2019
18-25 years old	21.4%	29.8%
26+ years old	5.9%	14.1%

Back in 2010, marijuana use was largely concentrated among teens and young adults. But the data shows a clear trend of rising usage among Americans aged 26 and up.

In addition, 22.2 million Americans aged 12+ reported using marijuana in the past 30 days in 2020. This equates to 8.3% of the population, up from around 5.5% in 2010.

So marijuana use is up significantly across age groups compared to a decade ago. And this trend is likely to continue as stigma declines and access increases.

Trends in Frequency of Adult Use

When we look at frequency of use, most adult marijuana consumers use sporadically rather than daily. But daily use rates have been rising steadily over time.

In 2020, patterns of use among past-year adult users were:

• 5.7% used on more than 100 days
• 4.7% used on 51-100 days
• 7.9% used only 1-10 days

Comparatively in 2010:

• 3.1% used on more than 100 days
• 3.9% used on 51-100 days
• 9.2% used only 1-10 days

So while most adult users consume infrequently, daily and heavy use are rising trends.

Specifically, daily or near-daily marijuana use among adults has risen from 1.3% in 2002 to 2.3% in 2019 based on use on 300+ days per year. I expect this trend to continue with legal access expanding.

Though many perceive marijuana as harmless, heavy use can lead to dependence and side effects that disrupt work, relationships, and mental health for some. The trend towards increased heavy usage is concerning and something I‘ll be monitoring.

Adolescent and Teen Use Remains High

Unlike historic declines in teen usage of drugs like cocaine and alcohol, marijuana use remains stubbornly high among adolescents. Let‘s look at the stats.

The 2021 Monitoring the Future survey revealed:

• Past-year use reported by 17.3% of 10th graders
• Past-year use reported by 30.5% of 12th graders

This equates to around 1 in 3 seniors having tried marijuana recently.

37% of high school seniors also reported trying marijuana at least once in their lifetime. Additionally, 14% of 10th graders and 22% of 12th graders reported using marijuana in the past 30 days.

While these usage rates have remained relatively stable over the past decade, they remain very high considering the risks cannabis poses to developing teen brains.

Unlike with adults, daily marijuana use is rare among adolescents – around 2-3% of 12th graders report daily use.

However, past-month use indicates many teens are using regularly enough to potentially suffer consequences to mental health, IQ, motivation, and academic achievement.

As a tech expert and parent, I am concerned about our failure to reduce adolescent marijuana use over the past 20 years. Though adult use may be less troubling, early onset cannabis use has clear risks. More on that next.

Impact of Marijuana on Mental Health and IQ

What exactly are the risks and downsides of marijuana use, particularly for adolescents? Let‘s analyze the research.

Impact on IQ and Cognitive Function

A seminal long-term New Zealand study found that persistent adolescent marijuana use was linked to an average 8 point drop in IQ by age 38. Quitting cannabis did not fully restore these losses.

Heavy teen users with an onset before age 18 were the most impacted. Even adult use with a prior teenage habit resulted in IQ declines.

Researchers believe regular marijuana use during critical teenage brain development years impairs concentration, learning, and memory.

More recent studies support the finding that early heavy marijuana use can reduce IQ and cognitive functioning. Though a minority of adolescent users fall into the heavy use category, it remains a significant concern.

Mental Health Risks

Research has clearly established a link between marijuana use and higher risk of anxiety, depression, and psychotic symptoms in teens:

• Teens who use marijuana daily are over 5 times more likely to develop depression and anxiety than non-users.
• Adolescent marijuana use is associated with increased suicidal thoughts and self-harm.
• Early onset marijuana use heightens the risk of developing psychosis and schizophrenia later in life, especially with heavy use.
• Discontinuation of heavy teen marijuana use often leads to remission of depressive and psychotic symptoms.

While establishing causality is difficult with observational studies, the associations are strong enough that experts recommend caution around adolescent marijuana use.

Increased Risk-Taking

Studies show an association between teen marijuana use and increased risk-taking behavior including drug use, unsafe sex, driving under the influence, and delinquent crimes.

For example, adolescents aged 12-17 who use marijuana weekly are nine times more likely to experiment with other drugs compared to non-users. Associations like these further heighten the indirect risks of teen marijuana use.

The evidence clearly states that regular marijuana use in the teenage years poses considerable risks to long-term mental health, IQ, motivation, and behavior. While most adult use patterns appear less troubling so far, early onset cannabis use seems detrimental to adolescent development based on current data.

As with most things, occasional and light use is less concerning than heavy, chronic use starting at early ages. But more research is still needed to clarify exact thresholds and causative mechanisms.

Comparing Teen Usage Patterns by Gender and Race

Some clear demographic differences emerge when analyzing teen marijuana use patterns in detail. Let‘s explore how usage compares across gender, race/ethnicity, and sexual orientation based on the data.

Gender

Looking at the 2021 Monitoring the Future survey:

• Past-year use among male 12th graders was 35.2% compared to 26.3% among females.
• 22.5% of 12th grade males reported past-month use versus 19.1% of females.
• Male 10th graders were nearly twice as likely to use marijuana daily compared to females – 3.7% vs 2.1%.

So teen boys use marijuana substantially more than girls – they are more likely to have tried it, use it monthly, or use it daily.

However, use rates have remained relatively flat for teen girls over the past decade while declining moderately for boys. The gender gap may continue closing going forward.

Race/Ethnicity

Among 12th graders reporting past-year use in 2021:

• White: 33%
• African American: 28%
• Hispanic: 30%
• Asian: 9%

So while rates are similar for White, Black, and Hispanic teens, Asian adolescents have significantly lower marijuana usage levels.

For context, 30-day alcohol use rates are 55% for White 12th graders, 33% for Black students, and 37% for Hispanics.

So all racial groups use marijuana at comparatively high rates in their teen years. This contrasts with the larger alcohol use gaps between races.

Sexual Orientation

Teens identifying as lesbian, gay, bisexual or questioning (LGBQ) have substantially higher rates of marijuana use compared to heterosexual teens:

• Past-month use among LGBQ teens: 38%
• Past-month use among heterosexual teens: 21%

LGBQ youth also report higher rates of feeling depressed or suicidal. Marijuana use may be linked to self-medication of psychological or social distress.

Overall, the data reveals that teen boys, across most races, and LGBQ adolescents have elevated rates of marijuana use compared to girls, Asians, and heterosexual youth.

Understanding these demographic differences allows us to better target substance use education and mental health resources to at-risk groups.

Popular Methods of Consuming Marijuana

When most people imagine marijuana use, they picture the stereotypical joint being smoked. But cannabis consumption methods have diversified as laws and attitudes relax.

Smoking

Smoking remains the most popular method by far among both adults and teens. Typically the dried marijuana plant material is rolled into a joint or smoked in a pipe or bong.

Advantages of smoking include rapid onset of effects; ability to carefully control dosage; and accessibility. Drawbacks are the harms of smoking to lung health.

Vaporizers

Vaporizers heat cannabis to release active compounds in vapor form without full combustion and smoke. This is perceived as healthier than smoking by some consumers. Drawbacks include safety concerns around vape ingredients.

Edibles

Foods and drinks infused with cannabis like gummies, baked goods, olive oil, soda, etc. offer a convenient experience without smoking. It can be easier to accidentally consume excess THC compared to smoking. Effects also take longer to manifest.

Concentrates

Extracting cannabis oils and compounds into concentrated forms allows for very high THC doses. Wax and oils are vaporized in specialized water pipes called dab rigs. The intensity magnifies risks of dependence and adverse effects.

Tinctures

Tinctures with precise THC/CBD doses dispensed under the tongue provide controlled dosing. The effects manifest slower than smoking but faster than edibles. Tinctures work well for medical marijuana patients.

Topicals

Cannabis-infused lotions, balms and oils are absorbed through skin rather than ingested. Topicals are used mostly for localized pain relief rather than psychological effects.

As you can see, the ways marijuana can be consumed have expanded far beyond just joints. Different methods appeal to different consumers and usage occasions. But smoking remains the default for most users.

Signs of Unhealthy Marijuana Use

Most people can use marijuana occasionally without major health consequences, like having a glass of wine with dinner. However, for a minority of users, cannabis can become unhealthy addiction.

Signs that marijuana usage may be problematic or addiction include:

• Repeated failed attempts to cut back on use
• Using more frequently or at higher doses than intended
• Giving up social, recreational, or occupational activities to use marijuana
• Continuing use despite exacerbation of anxiety, depression, and other problems
• Driving or operating machinery while impaired
• Showing irritability, anxiety, sleep issues, and other withdrawal symptoms when trying to quit
• Intense cravings for marijuana

Addiction treatment programs can help dependent users overcome marijuana problems through counseling, support groups, and sometimes medications to ease withdrawal. Addressing any underlying mental health issues is also important.

With marijuana addiction, psychological dependence usually occurs before physical dependence. But over time, some users do experience physical withdrawal symptoms when quitting heavy use abruptly.

As legal access expands, it‘s important we balance marijuana‘s benefits with education around responsible use and prevention of hazardous use patterns.

Health Benefits and Medical Uses

While we‘ve covered several health risks, it‘s important to note marijuana has demonstrated benefits including:

Chronic pain relief – Marijuana can reduce pain from conditions like arthritis, headaches, injuries, and nerve pain. However, long-term use for chronic pain is controversial.

Nausea relief – CBD and THC can reduce chemotherapy-induced nausea and vomiting in cancer patients. Dronabinol, a prescription THC drug, is FDA-approved for this purpose.

Appetite stimulation – Marijuana can counteract low appetite and weight loss in people with cancer, HIV/AIDS, or other conditions. Dronabinol is also approved for appetite stimulation.

Multiple sclerosis – Sativex, an oral spray combining THC and CBD, has been shown effective for reducing multiple sclerosis spasticity symptoms.

Epilepsy – Epidiolex, a purified CBD product, has FDA approval for treating seizures in two rare epilepsy disorders in children.

Insomnia – Lower doses of certain cannabis formulations may help insomnia without residual daytime sleepiness commonly seen with sleep medications.

Anxiety – Low doses of marijuana may temporarily reduce anxiety levels. Paradoxically higher doses often increase anxiety due to activation of different receptors by higher THC concentrations.

Post-traumatic stress disorder (PTSD) – Some early research shows potential for THC and CBD usage to help with nightmares and anxiety in PTSD patients.

The psychoactive euphoria of THC also helps explain recreational and medical marijuana use for depression, anxiety, and pain. Users report that it can provide temporary symptom relief in low doses.

However, most health benefits outside of the FDA-approved uses still lack sufficient clinical evidence according to medical organizations. More research is underway and needed.

Talk to your doctor before using marijuana medically, even in states where it is legal recreationally. Self-medicating without guidance is risky.

I hope this overview has provided you with a comprehensive understanding of marijuana‘s medical upsides and downsides based on current evidence. The health effects are complex, variable by individual, and dependent on factors like strains used and dosage patterns.

Conclusion

In summary, marijuana use continues to increase among both adolescents and adults in America. Occasional use appears relatively harmless for most adults based on current data. However, heavy adolescent use can pose risks including long-term mental health issues and cognitive declines.

As public policies adapt, we must emphasize marijuana education and prevention efforts focused on teens. Adult consumers need better guidance around strains, dosages, and forms to optimize benefits and minimize harms.

Research still lags behind the rapid changes in public policy and attitudes. So we must continue having open, balanced conversations as a society around cannabis. Only through smart legal frameworks and evidence-based education can we successfully integrate marijuana as its use expands.

I hope you found this deep dive into marijuana use stats insightful. Let me know if you have any other questions!