The Impact of CBD on Mood Disorders and Chronic Stress Physiology

This podcast episode, hosted by Dr. Donnelly Snipes, delves into the intricate physiological mechanisms underlying mood disorders, primarily focusing on the role of chronic stress and the potential therapeutic effects of Cannabidiol (CBD). It begins by explaining how stress triggers the release of cortisol, norepinephrine, dopamine, adrenaline, glutamate, and thyroid hormones, leading to increased blood sugar, fatty acids, and altered gonadal hormone, serotonin, and GABA levels. Chronic stress is shown to cause excitotoxicity, leading to neuronal death, and cortisol resistance, which perpetuates inflammation. These physiological changes are directly linked to symptoms of mood disorders like anxiety, depression, apathy, sleep disturbances, and changes in pain tolerance, emphasizing the critical role of the HPA axis, hormone imbalances, inflammation, and circadian rhythm dysregulation.

The discussion then shifts to CBD's multifaceted actions within the body. CBD primarily binds to CB2 receptors, found predominantly on immune cells outside the central nervous system, explaining its non-psychoactive nature. Activation of these receptors decreases the release of stimulating neurotransmitters and provides synaptic control. CBD also interacts with dopamine D3 receptors, enhancing motivation and energy, and is shown in animal studies to decrease fear-associated neurons and modify cerebral blood flow in anxiety-related brain areas like the amygdala and hippocampus. A human study cited a significant reduction in anxiety symptoms (79.2%) with CBD use, highlighting its potential efficacy compared to traditional pharmacological interventions.

Further mechanisms of CBD's action include stimulating synaptic plasticity and neurogenesis, which are crucial for treating depression and counteracting stress-induced neuronal loss. CBD is also believed to reduce systemic inflammation, a strong correlate of depression, partly through the activation of the A2A adenosine receptor. Adenosine, which builds up to induce sleep pressure, is often reduced during chronic stress, and CBD's inhibition of adenosine uptake can promote calmness. However, a crucial nuance is the potential for exponentially additive sedative effects if CBD is combined with other adenosine-inhibiting drugs, necessitating careful consideration of dosages and interactions.

The episode concludes by detailing specific research findings on CBD dosages, noting a bell-shaped curve of efficacy for social anxiety disorder, with 300mg showing the highest anti-anxiety effects. It also highlights CBD's ability to modulate brain activity patterns, such as reducing prefrontal-subcortical connectivity via the amygdala, and its role in improving sleep and regulating circadian rhythms. The ongoing research, including double-blind placebo-controlled trials for bipolar disorder, underscores the nascent but promising understanding of CBD's role. The host differentiates between pure CBD and THC-containing products (like 'namix malls') and briefly mentions the importance of terpenes in enhancing CBD's therapeutic properties, advocating for continued research into accessible, non-psychoactive options.

when you're under stress your body releases cortisol which is a hormone that is a steroid it tends to be anti-inflammatory in nature and it suppresses your immune system

chronic stress leads to something called excitotoxicity all of those chemicals that are released during the stress response norepinephrine adrenaline glutamate thyroxine create an environment that is very hot if you want to think of it that way which ends up causing the death of neurons

when the body is constantly bombarded by cortisol it recognizes it can't keep going it can't run that hot for an extended period of time so it starts becoming tolerant or resistant to the effects of the cortisol

chronic stress underlies a lot of different physical and mental health issues including anxiety and depression

cbd binds mostly to cb2 receptors thc binds mainly to cb1 receptors so cbd binds mainly to cb2 receptors that are found on cells of the immune system which include t and b lymphocytes

dopamine does not produce that euphoria dopamine produces a motivation and it produces energy

one study in humans found that 79.2 of people experienced a reduction in anxiety symptoms when they started taking cbd

cbd is believed to reduce the inflammatory response and depression partially through activation of the a2a adenosine receptor

there is a very strong correlation between systemic inflammation and depression when inflammation goes up depression goes up and when inflammation goes down depression tends to go down

cbd at 300 milligrams in this study was found to have anti-anxiety effects with a dose-dependent bell-shaped curve at 100 300 and 900 milligrams for social anxiety disorder

cbd at 600 milligrams in another study reduced anxiety by modulating the patterns of brain activity altering prefrontal subcortical connectivity via the amygdala and the anterior cingulate

everything that happens in your body is interrelated and often creates a cascade effect