Research Review: Cannabis Helps People Addicted to Gateway Drugs

A New Study from Canada, and a Research Review of the past decade have debunked Myths: Cannabis Is now known as an Exit Drug:

A July 2024 study done at the University of Calgary in Canada investigated the effects of prenatal and early postnatal cannabis exposure on the brain development and behavior of mice. Using a controlled animal model, pregnant mice were given cannabis oil containing THC from the beginning of pregnancy until ten days after giving birth. The researchers measured the levels of THC and CBD in both the mothers and their offspring, finding that these substances persisted in the brains of the offspring even after the exposure period ended.

The researchers focused on the effects of this cannabis exposure on a specific brain region, the ventral tegmental area (VTA), which is crucial for the brain's reward system. The results showed that male offspring exposed to Cannabis had altered brain activity in the VTA, characterized by decreased inhibitory input, changes in the resting state of neurons, and increased neuron firing. These changes suggest a disruption in the normal regulation of dopamine, a key neurotransmitter involved in reward and motivation.

Interestingly, these brain changes did not translate into increased cocaine-seeking behavior in the exposed offspring, indicating that while prenatal and early postnatal cannabis exposure affects brain function, it may not necessarily increase the risk of addiction to other drugs, at least in the context of this study. This new study provides valuable insights into how early exposure to Cannabis can alter brain development, particularly in reward and motivation systems. However, the researchers suggest that these changes do not straightforwardly lead to a greater vulnerability to drug addiction.

The idea that Cannabis acts as a "gateway" or "entrance" drug to the use of more potent and addictive substances, such as cocaine, has been a topic of debate for decades. This concept suggests that the use of Cannabis may lead individuals to experiment with and potentially become dependent on harder drugs. Several studies and theories have explored this hypothesis over the years. The conclusion is quite obvious – Cannabis was a target of negativity due to the prohibition campaigns. Because of state legalization and pending federal movement, the attraction of investigational researchers has been garnished, rather than government-sponsored negative and likely biased past studies.

The Antiquated Gateway Hypothesis:

Kandel and Faust (1975): One of the most cited studies in this area was conducted by Denise Kandel and {Faust, who proposed the "gateway hypothesis." They found that individuals who used Cannabis were more likely to progress to the use of harder drugs like cocaine or heroin. This study suggested that drug use follows a sequence, with cannabis use being an early step in the progression to more dangerous substances.

Kandel's Later Work (1984): Kandel expanded on this idea, suggesting that the social environment, availability of drugs, and peer influence are significant factors in the progression from Cannabis to other drugs.

National Epidemiologic Survey on Alcohol and Related Conditions (NESARC):

Secades-Villa et al. (2015): This study analyzed data from NESARC and found that individuals who used Cannabis were significantly more likely to develop an alcohol use disorder and to use other illicit drugs, including cocaine. The researchers suggested that early exposure to Cannabis could increase the likelihood of subsequent drug use.

Animal Studies:

Volkow et al. (2003): Research led by Nora Volkow, the director of the National Institute on Drug Abuse (NIDA), used animal models to show that THC (the active component in Cannabis) could prime the brain to be more responsive to other drugs like cocaine. The researcher attributed the response to the effect of THC on the brain's reward pathways, which might increase sensitivity to different substances.

Twin Studies:

Lynskey et al.'s (2003) study utilized data from twin studies to explore the genetic and environmental contributions to the gateway hypothesis. The study found that cannabis use was associated with an increased risk of using other drugs, but both genetic predisposition and environmental factors influenced the relationship.

Longitudinal Studies:

Fergusson et al. (2006): A longitudinal study in New Zealand followed individuals over 25 years and found that those who used Cannabis by age 15 were more likely to use other illicit drugs later in life. The study controlled for confounding factors, such as socio-economic status and family background, but still found a significant association.

Both Science and Cannabis Community critics argue that the gateway hypothesis oversimplifies the relationship between Cannabis and other drug use. They suggest that other risk factors, such as socio-economic status, mental health issues, and peer influences, might better explain the progression to harder drugs – and not Cannabis use.

Some studies have suggested that the relationship is quite opposite to the past negative studies, where individuals predisposed to drug use start with more accessible substances like Cannabis and then move to other drugs.

Many other research efforts have explored the idea that Cannabis can help individuals reduce or quit the use of more harmful or illicit drugs, challenging the gateway hypothesis. These studies suggest that Cannabis may have therapeutic potential, particularly in managing withdrawal symptoms and reducing dependency on more dangerous substances

.

Critical Studies Exploring Cannabis as an Exit Drug:

Lucas et al. (2013): This study examined medical cannabis patients and found that many of them reported using Cannabis as a substitute for more harmful substances, including alcohol, prescription drugs, and illicit drugs. The majority of participants reported that Cannabis was effective in helping them reduce or quit their use of these substances.

Reiman (2009): In a survey of medical cannabis patients in California, 40% reported using Cannabis as a substitute for alcohol, 26% for illicit drugs, and 66% for prescription drugs. The patients cited fewer side effects, better symptom management, and fewer withdrawal symptoms as reasons for substituting Cannabis.

Haroutounian et al. (2016): This research focused on chronic pain patients using medical Cannabis and found a significant reduction in opioid use. Patients reported that Cannabis helped them manage pain more effectively, leading to a decreased need for opioids, which are highly addictive.

Bachhuber et al. (2014): This epidemiological study found that states with medical cannabis laws had a 24.8% lower mean annual opioid overdose mortality rate compared to states without such laws. The study suggested that access to Cannabis might help reduce opioid overdose deaths by providing an alternative for pain management.

Paquette et al. (2018): This study investigated the effects of Cannabis on individuals with cocaine dependence. It found that participants who used Cannabis were more likely to adhere to treatment and had better treatment outcomes compared to those who did not use Cannabis. The study suggested that Cannabis might help reduce cravings and withdrawal symptoms associated with cocaine dependence.

Hurd et al. (2019): This research explored the use of cannabidiol (CBD), a non-psychoactive component of Cannabis, in treating heroin addiction. The study found that CBD significantly reduced cravings and anxiety in individuals with a history of heroin use, suggesting that Cannabis could play a role in managing withdrawal symptoms and reducing the risk of relapse.

Subbaraman (2014): This literature review explored the potential of Cannabis as a substitute for alcohol. The author found that some evidence supports the idea that Cannabis can help individuals reduce their alcohol consumption, mainly when used for harm-reduction purposes.

Turna et al. (2019): In this study, individuals with alcohol use disorder who used Cannabis reported lower alcohol consumption. The researchers suggested that Cannabis might help reduce alcohol intake by providing an alternative substance that is less harmful.

Studies Directly Countering the Gateway Hypothesis:

Degenhardt et al. (2010): This research analyzed data from the World Health Organization (WHO) and found that while cannabis users were more likely to use other drugs, this relationship was not necessarily causal. The study suggested that shared risk factors, such as socio-economic status and personality traits, might better explain the progression to other drugs rather than Cannabis use itself.

Ammerman et al. (2015): This review of the gateway hypothesis concluded that the evidence supporting Cannabis as a gateway drug is weak and that the relationship between cannabis use and the use of other substances is complex and likely influenced by a variety of factors, including social, environmental, and genetic factors.

Conclusion:

All of these studies present a contrasting perspective to the gateway hypothesis, more than suggesting that Cannabis may serve as a harm reduction tool or therapeutic aid rather than a gateway to more harmful substances. Research indicates that Cannabis, particularly in medical settings, can help individuals reduce or quit the use of more dangerous drugs, such as opioids, cocaine, and alcohol.

This mounting evidence more than suggests or supports the idea that Cannabis may have potential benefits in managing addiction and reducing the harm associated with other substances. The body of research within this one article breaks the past damaging myths about Cannabis. It sheds light on the positive aspects of how the plant and its extracts can provide relief or even aid individuals in quitting legally abusive, pharmaceutically addictive, and also illicit substances.

© Mike Robinson, Founder Global Cannabinoid Researcher Center and Creator of ECS Balance Control, The Researcher OG

References:

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Kandel, D. B. (1984). Marijuana users in young adulthood: Stabilities and change in behavioral and attitudinal correlates. American Journal of Public Health, 74(5), 478-486.

doi:10.2105/AJPH.74.5.478

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