Health Effects & Risks of Kratom, Opioids & Other Natural Occurring Medicines | Dr. Chris McCurdy

Key Takeaways

Kratom, a Southeast Asian plant, offers diverse effects from energy to pain relief, and is increasingly used as an alternative for opioid management.
Distinguish traditional kratom leaf from potent, commercial concentrates and isolates, which pose higher risks due to rapid absorption and unclear dosing.
Mislabeling and easy accessibility of highly concentrated kratom products necessitate strict regulation to prevent misuse and protect vulnerable populations.
Natural plant-derived compounds hold significant therapeutic promise, but their potential benefits are often overshadowed by the dangers of isolated, highly concentrated forms.
Understanding the complex pharmacology of natural products is crucial for harnessing their benefits and mitigating risks.

Kratom (Mitragyna speciosa) is a Southeast Asian plant traditionally used by laborers for energy, pain relief, and mood enhancement, typically by chewing fresh leaves or brewing tea.
Traditional consumption leads to slower absorption, contrasting sharply with modern commercial products, especially highly concentrated extracts and isolates, which are associated with faster, more intense effects.
In the U.S., dried kratom leaf is processed into powders or capsules, but concentrated forms, akin to "high-proof spirits" versus "light beer," lead to faster absorption and distinct physiological dynamics.
Users of commercial products often seek energy, mood enhancement, or pain relief, and some use it to manage opioid withdrawal, highlighting its varied applications and user motivations.

Highly concentrated kratom products, like energy shots, often have unclear serving sizes and can lead to accidental overdose and physical dependence, mirroring issues seen with nicotine products.
Unlike traditional leaf, synthetic 7-hydroxymitragynine, a potent opioid-like compound, is now synthesized and sold, posing significant risks due to its singular interaction with opioid receptors.
The lack of clear labeling distinguishing natural leaf from potent kratom-derived isolates creates confusion and risk for consumers, particularly for young people whose developing brains are vulnerable.
A "slow medicine" approach is advocated, emphasizing informed consumption and awareness of concentration levels, drawing parallels to the processed food industry's exploitation of natural desires.

Alkaloids are nitrogen-containing organic molecules crucial for plant defense, but their ability to bind with proteins also makes them pharmacologically active in humans, exemplified by nicotine, caffeine, and morphine.
Kratom's primary alkaloid, mitragynine, weakly interacts with opioid receptors but also affects serotonin and adrenergic systems, creating a "symphony orchestra" effect that may contribute to its diverse benefits, including pain relief.
The plant's alkaloids, while not evolved for human benefit, serve as potent antifungals for the kratom tree, showcasing their dual role in nature and potential therapeutic applications.
In drug discovery, isolating potent compounds from natural sources, like morphine from opium, led to powerful medicines but often overshadowed the broader, more nuanced effects of the whole plant.

Approximately 75% of modern medications originated from or were inspired by natural products, highlighting the deep connection between nature and pharmaceutical development.
The history of substances like the coca leaf (used in Coca-Cola) and cacao illustrates how traditional uses and nutritional values can be overshadowed or manipulated when compounds are isolated and concentrated.
The conversation explores the ethical and societal implications of consuming highly processed natural substances without understanding their origin or full chemical profile.
The concept of 'slow medicine' is introduced, advocating for a more connected and knowledgeable approach to consuming natural products, emphasizing the importance of understanding sources and concentrations.

Dr. Chris McCurdy's career, influenced by a pharmacist father and educator mother, led him to medicinal chemistry and a focus on natural products like lobiline and Salvia divinorum.
His research explored compounds that interact with different opioid receptors, noting that while mu receptors offer euphoria and pain relief, kappa receptors induce dysphoria despite pain relief.
McCurdy's re-discovery of shelved 1960s kratom research, which found mitragynine comparable to codeine, sparked his continued curiosity into the plant's unexplored potential.
His work provides a nuanced perspective on kratom, advocating for scientific education on serving sizes, product types, usage patterns, and potential drug interactions, promoting safer practices.