Marijuana: Next Big Break in Autism Research

Autism Marijuana
Autism, a spectrum disorder with varying symptoms and severities, is currently without a known cure or a single treatment that fully addresses its many facets. However, medical marijuana and its derivatives are showing promise in providing relief from symptoms such as depression, seizures, insomnia, and difficulty focusing. Numerous studies have indicated that cannabis and its chemical compounds, such as THC and CBD, could potentially treat conditions that share commonalities with autism symptoms. Recent research has shown that cannabis appears to be a well-tolerated, safe, and effective option for autism patients, with significant improvements in symptoms like hyperactivity, lethargy, irritability, and inappropriate speech.
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While there is no known cure for autism, and currently no single treatment that fully addresses the multiple facets of the condition, there is hope.

Medical marijuana and its derivatives are showing promise in providing relief from symptoms such as depression, seizures, insomnia, and difficulty focusing.

As researchers note:

Medical cannabis appears to be a “well-tolerated, safe, and effective option” for autism patients.

Understanding Autism

Autism is typically referred to as a spectrum disorder because there is significant variation in the nature and severity of symptoms associated with its progression. This is why the term autism spectrum disorder (or ASD) is preferred.

As Autism Speaks, explains:

There is not one autism but many subtypes, most influenced by a combination of genetic and environmental factors. Because autism is a spectrum disorder, each person with autism has a distinct set of strengths and challenges.

The ways in which people with autism learn, think and problem-solve can range from highly skilled to severely challenged. Some people with ASD may require significant support in their daily lives, while others may need less support and, in some cases, live entirely independently.

The symptoms of autism spectrum disorder often appear in the first years of life, but may become a life-long condition.

According to the American Psychiatric Association, people with ASD may exhibit:

  • Difficulty with communication and interaction with other people
  • Restricted interests and repetitive behaviors
  • Symptoms that hurt the person’s ability to function properly in school, work, and other areas of life

Studies estimate that around one in 68 children in the United States will develop some form of autism spectrum disorder by the age of eight, with boys being five times more likely to show symptoms as girls.

Although autism can be a lifelong disorder, treatments and services can improve a person’s symptoms and ability to function. Among the factors that may accompany and influence the development of autism are sensory sensitivities and medical issues such as gastrointestinal disorders, seizures or sleep disorders, as well as anxiety, depression, and attention issues.

Marijuana & Autism: Basics

Numerous studies have described the ways in which cannabis and its various chemical compounds (such as THC and CBD) have shown promise for treating conditions ranging from IBS and anxiety, to spasticity, and sleep disorders. Because many of these conditions have commonalities with autism symptoms, both the medical community and general public have raised the question of medical marijuana’s potential efficacy for the treatment of autism spectrum disorder.

Until recently, many arguments for using medical marijuana in the treatment of autism were anecdotal. Groups such as Mothers Advocating Medical Marijuana for Autism have shared testimonies from dozens of families describing how medical marijuana mitigated or alleviated symptoms of spasticity, reduced the frequency of inappropriate behavioral episodes and improved sleep patterns. These same groups make the argument that medical marijuana and cannabis derivatives could provide viable alternatives to pharmaceutical therapies such a Ritalin and Adderall.

One testimonial describes an individual with autism spectrum disorder who was subjected to an ongoing range of anti-psychotic medications at age eight to control disruptive behavior. His mother reported that none of the medications had a positive effect, and created unwanted side effects. At age 18, the subject was introduced to medical marijuana.

His mother writes:

He went from being an 18-year-old who mainly screamed or vaguely gestured to what he wanted, to a very fun-loving, sweet, and happy 24-year-old who makes verbal requests for things he wants and comments about things he sees.

I believe the marijuana calms his sensory and nervous system down, allowing him to process what is going on in his environment and not be threatened or overwhelmed by it.

We have seen such positive change, including decreased self-stimulatory behavior, decreased anxiety, decreased gut sensitivity, along with an increased awareness of his environment, and an increase in language.

The Epilepsy Connection

Interestingly, significant overlap exists between autism and epilepsy with respect to etiology, epidemiology, and neurobiology. Multiple population studies have established a comorbidity between these conditions, noting:

Autism is more common in people with epilepsy, approximately 20%, and epilepsy is more common in people with autism, with reported rates of approximately 20%.

This finding is particularly relevant, as medical marijuana is a well established treatment for epilepsy. In fact, the first FDA-approved cannabis-derived medication, Epidiolex, was designed to treat epilepsy.

According to FDA Commissioner Scott Gottlieb:

This approval serves as a reminder that advancing sound development programs that properly evaluate active ingredients contained in marijuana can lead to important medical therapies.

Autism & Marijuana Research

One of the first reports on the potential efficacy of medical marijuana for the treatment of autism spectrum disorder comes from a case study published by the Journal of Developmental & Behavioral Pediatrics:

Researchers administered Dronabinol, a cannabis-based medication, to autism patients. A six-month follow-up revealed there was a “significant” improvement in symptoms such as hyperactivity, lethargy, irritability, stereotypy and inappropriate speech.

Researchers also reported on the use of Dronabinol to treat 10 adolescent patients with intellectual disabilities, which resulted in 8 patients showing improvement in the management of treatment-resistant self-injurious behavior.

A separate Israeli study,involving 60 adolescents with autism spectrum disorder, documented the effects of treatment with CBD-rich marijuana.

The authors observed:

Following the cannabis treatment, behavioral outbreaks were much improved, or very much improved in 61% of patients.

This led researchers to conclude:

This preliminary study supports feasibility of CBD-based cannabis trials in children with ASD.

In one of the largest studies to date, a group of 188 autism spectrum disorder patients were treated with a cannabis oil containing 30% CBD and 1.5% THC. At a six-month follow-up, it was noted that 30% of the participants reported a “significant” improvement in their condition and an additional 50% showed “moderate” improvement.

As the study authors summarize:

Cannabis in ASD patients appears to be a well-tolerated, safe, and effective option to relieve symptoms associated with ASD.

Updated: May 27, 2024

Article Written By: ,

Pierce Hoover

Pierce Hoover is a career journalist with more than three decades of experience in print, broadcast and online writing, editing and reporting, with more than 5,000 articles published in national and international print media and online. His focus on medical marijuana therapies mirrors his broader interest in science-based alternative medical practices.


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