Can Weed Help Treat ADHD?
“I felt like someone turned on a light switch in my head,” Joseph Lazarus says of his first time smoking weed. It was a classic scene from American adolescence: He snuck out into woods near his home in York, Pennsylvania, with an older schoolmate who liked to blaze. For Lazarus, the experience was profound: “I heard the birds chirping for [what seemed like] the first time,” he says. The leaves seemed greener. He felt the wind tickle his skin. “I was one with the forest, a wooded forest. I was so calm.” He was 13.
It was one of the first times Lazarus felt normal. At age six, he was diagnosed with attention-deficit/hyperactivity disorder and prescribed the usual stimulants. They didn’t help. “I couldn’t concentrate or retain information,” he says. “I had a hard time with grammar. I couldn’t remember the rules.” He was restless, unable to focus in class and easily bored at home for his entire childhood. He says emotional trauma played a role; he had to process his parents’ divorce at about the same age he was diagnosed. “I felt like there was a stick of dynamite in me ready to go off,” he says.
But his thought pattern after smoking up? “It was like if you are on a four-lane highway with cars coming from everywhere and then you are on a country road.” Lazarus, now a 33-year-old home remodeler and still living in York, has been self-medicating with cannabis since that day in the woods. At the time, the dramatic change in his mannerisms caused a guidance counselor to start a process that got him sent to an institution for troubled teens. But he says weed has been the only treatment that has stabilized him. (Vaping is his current method of choice.) “I’m using a tape measurer and making calculations and plans every day,” he says. “I don’t think that would be possible without cannabis.”
Evidence that cannabis helps with ADHD is emerging and scant, but signs indicate that people are using it to treat their symptoms, anyway. A 2016 Duke University study of 268 ADHD-related internet threads, for instance, found that 25 percent included a post from someone indicating that it was therapeutic for ADHD. (Only eight percent of the threads included a post saying it was harmful, five percent that it was a mix of therapeutic and harmful, and two percent that it had no effect on ADHD symptoms.)
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Other studies also show promise for cannabis-based medicine, if not recreational weed. Last year, researchers at King׳s College London’s Institute of Psychiatry, Psychology and Neuroscience completed a randomized, placebo-controlled experimental study of a cannabinoid medication on adults with ADHD. Subjects who used Sativex Oromucosal Spray—which is an extract of cannabis, and therefore different from recreational weed—experienced some relief in their hyperactivity/impulsivity symptoms. They also reported more inhibition and better attention depth when compared to the group that took a placebo.
Ruth Cooper, the lead author who completed the study as part of her dissertation, says she was motivated by the knowledge that many psychiatrists and psychologists—including her advisor and co-author—recommend cannabis for ADHD. They prefer cannabis to medications often because of the more tolerable side effects, Cooper says. “There’s some research on it, but not very much,” she adds.
Cooper says her study of 30 subjects is small, but promising. “I think in the future if more evidence could be shown that it has greater effects in larger trials, it would become a common treatment,” she says. In the meantime, some physicians aren’t waiting for more scientific input. David Bearman, a private practice physician and certified cannabinoid medicine specialist, has been prescribing medical marijuana in California for 40 years, he says, and working around the laws in place. Bearman says young people and parents often contact him about cannabis-based treatments for ADHD. They complain that drugs like Ritalin increase the restlessness and nervousness that was problematic in the first place.
The effect on students with ADHD who are struggling, he says, tends to be dramatic. “Most of my patients’ [grades] went from Cs and Ds to Bs,” Bearman says. “One credited cannabis with getting his PhD.” Bearman posits—as many other researchers have—that ADHD might be the result of a lack of the neurotransmitter dopamine in the brain’s prefrontal cortex. Nerve signals might be slowed or stagnated, leading to a loss of attention and generally slower thought process. THC causes the brain to produce more dopamine, which means more of it becomes available for the essential tasks of memory and attention.
Celeste Thirlwell, a physician and sleep specialist at Apollo Cannabis Clinics in Toronto, says that the inflammation of the nervous system is a common cause of ADHD, and cannabis is a natural anti-inflammatory agent. Without deep sleep, “the nervous system is not being properly entrenched,” Thirlwell says. “It’s not being turned off properly, so you have problems with memory.”
Thirwell recommends her patients vape with a sativa strain to ease the inflammation and get an attention-renewing night of sleep. Not all medical professionals, however, are quite so bullish on using cannabis to treat attention deficit disorder: “ADHD is a basket of problems,” says Scott Shannon, a physician and holistic medical practitioner in Fort Collins, Colorado. “Saying you can’t pay attention is like saying [to a mechanic], ‘My car isn’t going forward.’ There are many things that could [be] wrong.”
Shannon, however, has recommended hemp-derived CBD, the non-psychoactive compound in the cannabis plant, for ADHD symptoms and other complaints related to restlessness in his patients. (He would prefer to avoid the psychoactive effects of THC.) But he cautions people not to overthink the effect. “We know that engaging the endocannabinoid system has a calming effect,” he says, “so naturally, CBD is useful for that over-arousal.”
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"I felt like someone turned on a light switch in my head."
Can marijuana help treat ADHD?
Research on the consequences and effectiveness of using marijuana to treat children, teens, and young adults with attention deficit hyperactivity disorder continues to evolve.
However, the results are mixed and do not advocate the use of the drug for this condition on a medical basis.
Medical marijuana is still illegal in many states, and research has not proved its suitability for treating attention deficit hyperactivity disorder (ADHD).
This article looks at the scientific research and other evidence for and against the potential use of marijuana as a treatment for symptoms of ADHD.
Share on Pinterest Marijuana is still unproven as an effective treatment for ADHD symptoms.
ADHD is a neurodevelopmental disorder that affects around 6–9 percent of children and young adults, and about 5 percent of adults, globally.
A person with ADHD might find it hard to focus on tasks, frequently fidget, show signs of restless behavior, and they may be unable to stay still or quiet at appropriate times.
ADHD can lead to people having relationship problems or difficulties with academic work at school and college despite having normal or superior intellectual abilities.
Treatment for ADHD usually involves doctors prescribing stimulant medications, such as Ritalin or Adderall.
These medications are believed to help correct the levels of a neurotransmitter in the brain called dopamine. However, they may have unpleasant side effects.
To avoid these adverse effects, some people with ADHD use marijuana as a treatment option. This is because marijuana is believed to have the same impact on dopamine levels as prescription medications.
However, there remain many unanswered questions about how useful it is, and its safety, especially for children and young people.
Supporters of marijuana often claim it is a safe drug and has no risks of addiction. But opponents call it a “gateway drug,” potentially leading to the use of other drugs, and they claim it is more dangerous than some realize.
Marijuana is one of the most commonly used recreational drugs in the U.S. and is popular among younger adults. Most people smoke or eat the plant to produce a “high.”
In recent years, marijuana has made news as an alternative treatment for a variety of health conditions, including pain and mental health problems.
Despite these facts, questions and doubts remain.
A study of 268 separate online discussion threads reported that 25 percent of people said they believed that marijuana had a positive role to play in ADHD symptom management. The study points out, however, that research proving a connection between marijuana the management of ADHD is limited.
Some schools of thought suggest that ADHD migt stem from a lack of dopamine in the prefrontal cortex region of the brain.
As a neurotransmitter, dopamine is a chemical that transmits signals between nerve cells in the brain. Dopamine is believed to affect thought processes, including memory and attention.
Substances in recreational drugs, such as marijuana, lead to the production of more dopamine in the reward center of the brain.
The brain’s reward center gives an individual a pleasant sensation when they use marijuana and other drugs. However, this cycle of recreational drug use and increased dopamine can lead to the development of dependence.
Nature journal published a study in 2017 that discusses the dopamine-releasing action of tetrahydrocannabinol (THC), an active chemical component in marijuana, and the source of its pleasure sensation. The researchers advised that THC boosts short-term dopamine levels but may dull the system that releases dopamine long-term.
This varying effect suggests that even if marijuana provides short-term symptom relief, better focus, or sedation for people with ADHD, longer-term use may result in more harm than good.
However, in the journal Brain, an imaging study by researchers at Cambridge University in the United Kingdom disputed the connection between ADHD and dopamine. They, instead, related ADHD to the structure of the gray matter in the brain.
One trial from 2017 tested a cannabinoid medication on people with ADHD. While the participant number was small and the findings were not statistically significant, the results did show small improvements in ADHD symptoms. The results also suggested that adults who take cannabinoids for ADHD experience the side effects less than children.
A further review of available clinical evidence on marijuana cited a case that — although not involving ADHD — showed that a child with autistic spectrum disorder had improved hyperactivity levels after receiving a cannabidiol treatment.
However, other research shows a relationship between marijuana dependence and ADHD.
One study of 99 people seeking treatment for cannabis use disorders showed an estimated ADHD prevalence of between 34 and 46 percent.
Overall, research seems to indicate that, although marijuana seems to alleviate certain short-term effects of ADHD, it may present a heightened risk of dependence and might even make ADHD worse.
Is medical marijuana available for ADHD?
People who use marijuana as a treatment for ADHD often self-medicate, which means a doctor does not prescribe or recommend the marijuana they take.
The evidence for medical professionals to recommend or prescribe marijuana as an active treatment for ADHD is not compelling enough at present.
ADHD is a behavioral condition that makes concentration difficult. Stimulant medication is the standard treatment, but some people use medical marijuana as it eases symptoms without the adverse side effects. Studies show this might impact long-term health. MNT consider the benefits and risks of medical marijuana.