By Roger Chriss, PNN Columnist

Canadian family physicians Mark Dubé and Henry Chapeskie recently created a video called “Opioids: The Big Picture” to give what they describe as a “short history of how we got into trouble with opioids, how even a small number of opioid pills can lead to addiction, and why they should not be used in non-cancer chronic pain.”

Drs. Dubé and Chapeskie spend the first third of their hour-long video on the history of opioids, mostly the 19th century Opium War in China, and the remaining time on modern prescription opioids. They refer to opioids as a “global environmental toxin” which cause “narcotic neurotoxicity.”

They also claim that opioid-induced hyperalgesia is common, that no studies show any benefit to opioids for pain management, and that opioids cause permanent brain damage. They argue that the current opioid crisis is driven by the steadily increasing supply of prescription opioids and should be addressed the way we handle air pollution. They conclude by saying that “opioids are neurotoxic, cause pain, and are toxic to the individual and society.”

None of this holds up well to close scrutiny. The Opium War was about more than a “state-sponsored monopoly with an illicit drug.” In fact, there were two Opium Wars, with the first being about trading rights, open trade and especially diplomatic status, and the second war directed at expanding trade, including opium, between Europe and China.

The notion that opioids are a “global environmental toxin” comparable to air pollution assumes exposure is passive and inevitable. But opioids are not like mercury or asbestos, emitted as a contaminant from industrial processes that could be cleaned up. Their claims about neurotoxicity are also problematic. Although small-scale imaging studies do show changes to some brain structures upon opioid exposure, the significance of this is unclear.

Their emphasis on opioid-induced hyperalgesia (OIH) – the theory that prolonged use of opioids leads to greater pain sensitivity -- is also greatly overstated. A 2021 review of published studies found only 72 patient cases of OIH, all of which were easily diagnosed and managed by opioid rotation, opioid cessation or switching to non-opioid pain medications.

Last and most important, Dubé and Chapeskie claim that “there is no evidence (zero!) to support use of opioids” for chronic non-cancer pain. They cite the 2018 SPACE trial as their major source of evidence, although that study showed opioids were no better or worse than non-opioids for pain relief. More importantly, the SPACE study didn’t find any evidence of abuse, misuse, addiction or overdose among the 108 people on opioids for a whole year, which argues against the very risks that Dubé and Chapeskie describe as inevitable.

Dubé and Chapeskie point to a single study on opioid tapering that showed good outcomes. That 2020 study found only minor improvement in cognitive function after opioid tapering. Multiple other studies show the risks and harms of tapering often outweigh its benefits, especially when tapering is rapid.

Moreover, there are clinical studies showing that opioids are effective and safe when used appropriately. A 2021 German study, for example, found that tapentadol relieves chronic low back pain, and a 2017 review found tapentadol was effective and well-tolerated by patients with moderate to severe pain for up to two years.

The video “Opioids: The Big Picture” could have been a useful introduction to opioid pharmacology, chronic non-cancer pain, and clinical practice. It could have introduced current best practices for opioid initiation and tapering. And if the focus was to be on the public health risks and harms of opioids, then it should have followed the fine work of David Courtwright's book "Dark Paradise”, Sam Quinones's "Dreamland”, or Chris MacGreal's "American Overdose".

It is unfortunate that even in the 2020s we are still struggling to get basic information about opioids right. This is arguably part of why we have a worsening opioid crisis and deteriorating pain management situation.

Roger Chriss lives with Ehlers Danlos syndrome and is a proud member of the Ehlers-Danlos Society. Roger is a technical consultant in Washington state, where he specializes in mathematics and research.