Health and Medicine

New Research Shows that Cannabis Could be a Non-Addictive Method for Pain Relief


Recent research at OHSU proposes an avenue for developing treatments for chronic pain that utilizes the medicinal properties of cannabis, while minimizing the danger of addiction at the same time.

The study was conducted in a rodent model and offers additional justification for the development of therapeutics using cannabinoid receptors to treat chronic pain. About 30 percent of the U.S. population suffer from chronic pain. The function of two forms of endocannabinoids – cell membrane receptors that bind cannabinoids and occur naturally within the body, was studied by OHSU researchers.

Susan Ingram, Ph.D., an associate professor of neurosurgery in the OHSU School of Medicine and senior author of the study, notes that this may be a way by which better pain medications, that are not addictive, can be obtained. Ingram and her colleagues note that the treatment of chronic pain has challenged the medical system, as medications are not always effective, or create serious side effects. Emerging data does however indicate that drugs that target the endocannabinoid system could produce analgesia with less side effects when compared to opioids.

The body’s endocannabinoid system consists of receptors, endocannabinoid molecules and enzymes. These components make and degrade the endocannabinoids that are located throughout the peripheral and central nervous system, and in the brain. The team concentrated on two cannabinoid receptors, known as CB1 and CB2. These receptors are located in the rostral ventromedial medulla – a group of neurons known to modulate pain located in the brainstem. This is the first study to examine the function of the CB1 and CB2 receptors at the membrane level, both in adult and late adolescent neurons.

The researchers noticed that chronic inflammatory pain decreased CB1 activity, while the activity of CB2 receptors increased. Both CB1 and CB2 receptors are activated by cannabis equally. The study proposes that the selective activation of CB2 receptors could contribute to the medicinal benefit of cannabis. At the same time, the propensity of the other cannabinoid receptor, CB1, is minimized to induce withdrawal and tolerance.

Ingram noted that the next phase of the research would explore this area of brain circuitry further. This could ultimately lead to the development of a new genre of pain medication.

The full study was published in the Journal of Neuroscience.

  • Werewolf Alpha

    I don’t need a study to know it works for pain. I moved to Colorado and after 2 decades of terrible back and joint pain I literally cried with relief the first time I smoked.

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