CBD’s Role In Treating Anxiety And Substance Use Disorders

Article by, Lift News

CBD's role in treating anxiety and substance use disorders Recent article suggests CBD has potential as adjunct therapeutic for treatment of certain mental disorders

A review article published in the British Journal of Pharmacology earlier this year suggests that cannabidiol (CBD), the major non-psychoactive component of cannabis, may have utility as an adjunct to treatment approaches for anxiety disorders such as PTSD and substance abuse disorders. This is mainly due to the way CBD interacts with learning and memory processes. But first, a look at CBD’s anti-anxiety effects and a brief overview of classical conditioning.

Animal studies have clearly established CBD’s anxiolytic effect using tests which measure defensive behaviors in response to a variety of threatening or unpleasant stimuli. Broadly, these anxiolytic effects occur at low and medium doses, but not at high doses. These anxiolytic effects have also been shown in human studies in which participants are exposed to anxiety-provoking stimuli, as well as in studies of people with anxiety disorders.

While CBD has many effects in the brain, only two of these mechanisms seem to be directly related to its anxiolytic effects. The first is the direct activation of serotonin 5-HT1A  receptors in the periaqueductal gray, the bed nucleus of the stria terminalis, and the infralimbic cortex.

The second relevant mechanism of action is the indirect activation of cannabinoid CB1 receptors. CBD achieves these by interfering with the reuptake and metabolism of anandamide, one of the endocannabinoids produced by the body, resulting in an increase of serum and hippocampal anandamide levels.

Fear learning and classical conditioning

Classical conditioning refers to a kind of learning by association where a neutral cue or context (unconditioned stimulus or ‘US’) is repeatedly presented alongside a desirable or undesirable event (conditioned stimulus, CS). Eventually, the organism forms a strong association between the US and the CS such that the CS presented on its own now triggers the same reaction that the US does. This process is referred to as conditioning.

For example, if a small electric shock (US) is repeatedly applied to a rat at the same time that a neutral sound (CS) is played, the rat will eventually respond to the sound (CS) on its own as it would have to the shock.

This fundamental mechanism is at play in anxiety disorders as well as substance use disorders. For example, a veteran with PTSD may have a strong association between loud noises and a vital threat, such that fireworks, previously indicative of celebration, may now trigger intense anxiety and feelings of imminent danger. In a similar fashion, a person who has overcome a drug dependency may feel a strong craving or be more inclined to relapse if they are exposed to a person or environment that was strongly associated with their past drug use.

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