MD, PhD, MAE, FMedSci, FRSB, FRCP, FRCPEd.

pain

Cannabis use is a frequently-discussed subject, not just in the realm of so-called alternative medicine (SCAM). In general, SCAM advocates view it as an herbal medicine and recommend it for all sorts of conditions. They also often downplay the risks associated with cannabis use. Yet, these risks might be substantial.

Cannabis potency, defined as the concentration of Δ9-tetrahydrocannabinol (THC), has increased internationally, which could increase the risk of adverse health outcomes for cannabis users. The first systematic review of the association of cannabis potency with mental health and addiction was recently published in ‘The Lancet Psychiatry’.

The authors searched Embase, PsycINFO, and MEDLINE (from database inception to Jan 14, 2021). Included studies were observational studies of human participants comparing the association of high-potency cannabis (products with a higher concentration of THC) and low-potency cannabis (products with a lower concentration of THC), as defined by the studies included, with depression, anxiety, psychosis, or cannabis use disorder (CUD).

Of 4171 articles screened, 20 met the eligibility criteria:

  • eight studies focused on psychosis,
  • eight on anxiety,
  • seven on depression,
  • and six on CUD.

Overall, higher potency cannabis, relative to lower potency cannabis, was associated with an increased risk of psychosis and CUD. Evidence varied for depression and anxiety. The association of cannabis potency with CUD and psychosis highlights its relevance in healthcare settings, and for public health guidelines and policies on cannabis sales.

The authors concluded that standardisation of exposure measures and longitudinal designs are needed to strengthen the evidence of this association.

The fact that cannabis use increases the risk of psychosis has long been general knowledge. The notion that the risk increases with increased potency of cannabis seems entirely logical and is further supported by this systematic review. Perhaps it is time to educate the public and make cannabis users more aware of these risks, and perhaps it is time that SCAM proponents negate the harm cannabis can do.

Placebo effects are a fascinating subject. In so-called alternative medicine (SCAM), they are particularly important because much of SCAM seems to rely on little more than placebo effects. Therefore, I think this new paper is of some relevance to us.

The aim of this systematic review was to quantify the placebo effect of intraarticular injections for knee osteoarthritis in terms of pain, function, and objective outcomes. Factors influencing placebo effect were investigated.

The authors concluded that the placebo effect of knee injections is significant, with functional improvements lasting even longer than those reported for pain perception. The high, long-lasting, and heterogeneous effects on the scales commonly used in clinical trials further highlight that the impact of placebo should not be overlooked in the research on and management of knee osteoarthritis.

The authors furthermore confirmed that “the main finding of this meta-analysis is that placebo is an important component of the effect of injective treatments for patients with KOA, with saline injections being able to provide relevant and long-lasting results not only in terms of pain relief but also with respect to stiffness resolution and function improvement. These results are both statistically and clinically significant and can be perceived by patients up to 6 months.”

I would dispute that!

To explain why it might help to read our 1995 BMJ paper on the subject:

We often and wrongly equate the response seen in the placebo arm of a clinical trial with the placebo effect. In order to obtain the true placebo effect, other non-specific effects can be identified by including an untreated control group in clinical trials. A review of the literature shows that most authors confuse the perceived placebo effect with the true placebo effect. The true placebo effect is highly variable, depending on several factors that are not fully understood. A distinction between the perceived and the true placebo effects would be helpful in understanding the complex phenomena involved in a placebo response.

In other words, what the authors picked up in their analysis (i.e. the changes that occurred in the placebo groups between the start of a trial and after placebo application) is not just the placebo response; it is, in fact, a combination of a placebo effect, concomitant interventions/care, regression towards the mean, natural history of the condition and possibly other factors.

Does it matter?

Yes, it does!

Placebo effects are not nearly as powerful and long-lasting as the authors conclude. And this means virtually all their implications for clinical practice are incorrect.

Trevor Zierke is a D.C. who published several videos that have gone viral after saying that “literally 99% of my profession” is a scam. “When I say almost all the usual lines chiropractors tell you are lies, I mean almost all of them,” he stated. Zierke then went on to give examples of issues chiropractors allegedly make up, including someone’s spine being “misaligned,” tension on nerves causing health problems, and someone having back pain because their hips are off-center. “Almost all of these aren’t true,” he concluded.

In a follow-up video, he claimed that the reasons most people are told they need to go to a chiropractor are “overblown or just flat out lies proven wrong by research.” He also noted that, while there are many scams, that “doesn’t mean you can’t get help from a chiropractor.”

In a third TikTok video, Zierke offered some valid reasons to see a chiropractor. He said that one can seek help from a chiropractor if one has musculoskeletal pain that has been ongoing for more than one to two days, and that’s about it. He stated that issues that a chiropractor couldn’t really fix include “GI pain, hormonal issues, nutrition,” among others.

In comments, users were largely supportive of Zierke’s message.

One said: “As a physiotherapist, I’ve been trying to tell this but I don’t want to like offend any chiropractor in doing so,” a commenter shared.

“Working in a chiropractic office, this is fair,” a further user wrote. “I have issues that I know an adjustment will help & other pain that would be better stretched/released.”

In an email, Zierke reiterated the intention of his videos: “I would just like to clarify that chiropractors, in general, are not a scam or are inherently scammers (I myself am a practicing chiropractor), but rather a lot of very popular sales tactics, phrases, and wording used to imply patients need treatment, and methods of treatment, have never been proven to be true,” he explained. “When chiropractors say & use these methods stating things that are not factually true—I believe it’s scammy behavior and practices. There are still a lot of very good, honest, and integral chiropractors out there,” he concluded. “They can provide a lot of help and relief to patients. But that’s unfortunately not the majority, and I’ve heard too many stories of people falling victim to some of these scam-like tactics from bad apple chiropractors.”

None of what DC Zierke said can surprise those who have been following my blog. On the contrary, I could add a few recent posts to his criticism of chiropractic, for example:

I rest my case.

Third molar extraction is a painful treatment and thus is often used to investigate the effects of analgesics on pain. Hypnotherapy is said to help to reduce pain and to decrease the intake of postoperative systemic analgesics. Therefore, it seems reasonable to study the effects of hypnotherapy on the pain caused by third molar extraction.

In this study, the effectiveness of a brief hypnotic induction for patients undergoing third molar extractions was investigated. Data were collected from 33 patients with third molar extractions on the right and left sides. Patients received two different types of interventions in this monocentric randomized crossover trial. Third molar extraction was conducted on one side with reduced preoperative local anesthetics and an additional brief hypnotic induction (Dave Elman technique). The other side was conducted with regular preoperative local anesthetics without a brief hypnotic induction (standard care). Intake of postoperative systemic analgesics was allowed in both treatments.

Patients’ expectations about hypnosis were assessed at baseline. The primary outcome was the area under the curve with respect to ground of pain intensity after the treatment. Secondary outcomes were the amount of postoperative analgesics consumed and the preferred treatment.

There was no evidence that the area under the curve with respect to ground of pain differed between the two interventions (controlling for gender). There was, however, evidence to show that the patients’ expectations affected the effectiveness of the brief hypnotic induction. This means that patients with high expectations about hypnosis benefit more from treatment with reduced preoperative local anesthetics and additional brief hypnotic induction.

The authors concluded that, in this study, additional a brief hypnotic induction with reduced preoperative local anesthetic use did not generally reduce posttreatment pain after third molar extraction more than regular local anesthetics. The expectation of the patients about the effectiveness of hypnosis affected the effectiveness of the brief hypnotic induction so that patients with high expectations had a larger benefit from a brief hypnotic induction than patients with low expectations.

The most interesting findings here are, in my view, that:

  1. Hypnotherapy is not as effective as many enthusiasts claim.
  2. Expectation influences the outcome of hypnotherapy.

Expectation is, of course, a determinant of the size of the placebo response. Thus, this finding is interesting but far from unexpected. I would go as far as postulating that similar results would be obtained with most treatments regardless of whether they are alternative or conventional. The difference is that, in the case of alternative therapies, the expectation is a major (if not the only) determinant of the outcome, while it merely somewhat improves the outcome of an effective treatment. To put it differently, so-called alternative medicine (SCAM) relies entirely/mostly on expectation, while conventional medicine does not.

Earlier this year, I started the ‘WORST PAPER OF 2022 COMPETITION’. You will ask what is there to win in this competition? I agree: a competition without a prize is no fun. Therefore, I suggest offering the winner (that is the author of the winning paper) one of my books that best fits his/her subject. I am sure this will over-joy him or her. And how do we identify the winner? I suggest that I continue blogging about nominated papers (I hope to identify about 10 in total), and towards the end of the year, I let my readers decide democratically.

In this spirit of democratic voting, let me suggest to you ENTRY No 6:

This study was to ascertain the efficacy of dry cupping therapy (DCT) and optimal cup application time duration for cervical spondylosis (CS). It was designed as a randomized clinical trial involving 45 participants with clinically diagnosed CS. The eligible subjects were randomly allocated into three groups, each having 15 participants. Each of the three groups, i.e., A, B, and C, received DCT daily for 15 days for 8 min, 10 min, and 12 min, respectively. All the participants were evaluated at the baseline, 7th, and 15th day of the trial using the neck disability index (NDI) as well as the visual analog scale (VAS).

The baseline means ± SD of NDI and VAS scores were significantly reduced in all three groups at the end of the trial. Although all three groups were statistically equal in terms of NDI, group C demonstrated greater efficacy in terms of VAS.

The authors concluded that the per-protocol analysis showed that dry cupping effectively alleviated neck pain across all treatment groups. Although this effect on neck disability index was statistically equal in all three groups, the 12-min protocol was more successful in reducing pain.

Who would design such a study and why?

  • The authors claim they wanted to ascertain the efficacy of DCT. A trial is for testing, not ascertaining. And this study does certainly not test for efficacy.
  • The groups were too small to generate a meaningful result of what, in fact, was an equivalence study.
  • Intra-group changes in symptoms between baseline and time points during treatment are irrelevant in a controlled trial.
  • The slightly better results of group C are most likely due to chance or non-specific effects (a longer application of a placebo would generate better outcomes that a shorter one).
  • The study participants had cervical spondylosis, yet the conclusion is about neck pain. The two are not identical.
  • The title of the paper promises that we learn something about the safety of DCT. Sadly, a trial with just 45 patients has no chance in hell to pick up adverse effects in a reliable way.
  • As there is no control group, the study cannot tell us anything about possible specific effects of DCT.

The authors of the study have impressive affiliations:

  • Department of Ilaj bil Tadbir, Luqman Unani Medical College Hospital and Research Center, Bijapur, India.
  • Department of Ilaj bil Tadbir, National Institute of Unani Medicine, Bengaluru, India.
  • Department of Moalajat, Luqman Unani Medical College Hospital and Research Center, Bijapur, India.

I would have hoped that researchers from national institutions and medical colleges should be able to design a trial that has at least a small chance to produce a meaningful finding. As it turns out, my hope was badly disappointed.

I recently looked at the list of best-sellers in homeopathy on Amazon. To my surprise, there were several books that were specifically focused on the homeopathic treatment of children. Since we had, several years ago, published a systematic review of this subject, these books interested me. Here is what Amazon tells us about them:

No 1

Homeopathic remedies are increasingly being used to treat common childhood ailments. They are safe, have no side effects or allergic reactions, are inexpensive and, above all, effective. In this guide, Dana Ullman explains what homeopathy is, how it works and how you can use it correctly to enhance your child’s health. He recommends remedies for more than 75 physical and emotional conditions, including: allergies, grief, anxiety, headaches, asthma, measles, bedwetting, nappy rash, bites and stings, shock, burns, sunburn, colic, teething, coughs and colds and travel sickness

Without doubt, this is the most comprehensive book on homeopathic pediatrics. Included is a complete guide to the correct use of homeopathy, recommended remedies for the treatment of more than seventy-five common physical, emotional, and behavioral conditions, and valuable information on the essential medicines that all parents should have in their home medicine kits

No 2

Tricia Allen, a qualified homeopath, offers a host of practical advice on how to treat illness using natural, homeopathic remedies. Homeopathy differs from conventional medicine in that it does not only alleviate the individual symptoms of an illness, but treats the underlying state to ensure that the disease does not return, something which rarely occurs when using traditional remedies. This guide gives you advice on; what homeopathy is and how to use it; each stage of childhood and how to deal with the complaints that occur at that time of a child’s development; the most common childhood illnesses, how to take your own steps to treating them, which homeopathic remedies to use and when to seek medical help and first aid.

No 3

The Homeopathic Treatment of Children is indispensible at giving both a clear overall impression of the various major constitutional types, and also a detailed outline for reference at the end of each chapter. Not only does Paul Herscu draw from various sources (repertories and materia medica), he also adds indispensable original information from his successful practice.

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The fact that such books exist is perhaps not all that surprising. Yet, I do find the fact that they are among the best-selling books on homeopathy surprising – or to be more precise, I find it concerning.

Why?

Simple: children cannot give informed consent to the treatments they receive. Thus, consent is given for them by their parents or (I suspect often) not at all. This renders homeopathic treatment of children more problematic than that of fully competent adults.

Homeopathy has not been shown to be effective for any pediatric condition. I know Dana Ullman disagrees and claims it works for children’s allergies, grief, anxiety, headaches, asthma, measles, bedwetting, nappy rash, bites and stings, shock, burns, sunburn, colic, teething, coughs and colds, and travel sickness. Yet, these claims are not based on anything faintly resembling sound evidence! Our above-mentioned systematic review reached the following conclusion: “The evidence from rigorous clinical trials of any type of therapeutic or preventive intervention testing homeopathy for childhood and adolescence ailments is not convincing enough for recommendations in any condition.”

And what follows from this state of affairs?

I am afraid it is this:

Treating sick children with homeopathy amounts to child abuse.

I came across an interesting case report recently published in an Austrian magazine. Here is my translation for non-German speakers:

A 42-year-old woman from Vienna has suffered from endometriosis since the age of 13. But it was only 8 years later that she found out what made the first two days of her menstruation so unbearable. She was not allowed to take painkillers to help herself during all that time. Her parents listened to medical “gurus” who distrusted conventional medicine.

“I grew up in a household where almost all illnesses were treated with homeopathy,” she wrote on Twitter. That’s exactly what became the IT expert’s undoing. In a recent interview, she looked back bitterly: “All infections and illnesses were treated with Bach flower remedies or homeopathics. Only in case of accidents or broken bones did my parents drive me to the hospital.” Her father suffered from an auto-immune disease. Because conventional medicine could not help him, he tried alternative approaches. “My parents slowly drifted more and more into this scene. At some point, they stopped listening to ‘normal’ doctors. It went downhill from there.”

As a girl, the Viennese had little chance of standing up to her parents’ “whisperers,” as she calls their esoteric advice. “When I got my period, I was in the worst pain. I fainted every month, even falling off my chair when I did it, once even at school. I vomited until I was so exhausted that I fell asleep.”

She begged her family to finally be allowed to consult a gynecologist. But he didn’t take the teenager seriously at the time and simply wanted to prescribe her the pill without a thorough examination. “I then went to my parents’ homeopathic ‘pill pusher’, who gave me homeopathics against my complaints. I wasn’t allowed to take painkillers because they ‘damage the liver’.” The guru persuaded the young woman that her health problems were her fault. “He said I just didn’t accept myself as a woman and that’s why I was in pain. I thought for a long time that I was just not strong and good enough.”

It wasn’t until she was already in her early 20s that her then-boyfriend took her to a gynecologist who finally took her condition seriously. “The ultrasound showed that I had quite a few cysts in my abdomen.” The diagnosis was also finally certain: she was now officially suffering from endometriosis. She was given the right medicine, and most of the endometriotic growths regressed. But a cyst had wrapped itself tightly around her right ovary, damaging it irrevocably over the years. It had died. “Homeopathy cost me my ovary,” the Viennese woman laments.

The fact that she nevertheless was able to become the mother of two children is thanks to her other ovary, which fortunately remained intact. But the feeling of having been treated wrongly, or not treated at all, for such a long time makes her angry. “I don’t blame my parents today. They have apologized and found their own way out of the gurus’ world of thought and out of the scene,” she emphasizes. “But I blame the people who pretend to be able to cure the majority of all diseases with homeopathy. Yet most of the time they can’t even find the right diagnosis and just give patients some stuff that has no side effects.” She now calls for an end to homeopathy.

_________________________

How many times have I said it?

His remedy might be risk-free, but the homeopath certainly isn’t!

 

Prof. Fabricio Benedetti is one of the world’s leading experts in the study of placebo effects. I have mentioned his excellent work before, for instance, here where he cautioned that quackery has today one more weapon on its side, which is paradoxically represented by the hard science–supported placebo mechanisms. Now he has expressed his concerns even more clearly in an article entitled “Alternative and natural medicine quackery is on the rise. Here’s why the placebo effect is part of the problem”. Here are a few excerpts from this excellent paper:

For several decades now, many scientists, including me, have been working hard to reveal the full power and scope of the placebo effect — the amazing ability of a simple sugar pill or other non-pharmaceutical “fake intervention” to improve someone’s quality of life. This research has been crucial to giving scientific credibility to a powerful psychological effect. But the advances of science have also backfired, spawning an alternative industry that preys on the vulnerable…

All this means that some alternative medicines can indeed have positive outcomes for patients, though not necessarily through the mechanisms that the therapy’s inventors supposed, but rather through a placebo effect. This holds true for treatments ranging from strange talismans to acupuncture — studies have shown that pain relief is about the same for patients receiving true acupuncture with needles, for example, as for those receiving sham acupuncture with trick needles.

The scientific advances in understanding placebo are fascinating. But one unfortunate outcome of all this work is that profit-seeking companies and individuals now have a new weapon: It is no longer necessary to demonstrate the effectiveness of their proposed therapies; it is enough to assert that these work because of the placebo effect. I receive myriad eccentric proposals for new therapies, ranging from talismans and concoctions to mascots and weird rituals. Their inventors claim that these are capable of inducing substantial health benefits and often seek my endorsement. These proposals have stepped up sharply in recent years. Sadly, the science of the placebo effect is fueling this new breed of pseudoscience…

So, if a salesperson says: “This concoction (or ritual or talisman) will reduce your pain,” it is not necessarily a lie, as the placebo effect may indeed stimulate pain-relieving circuits in the brain. But anyone could truthfully use these words, within limits.

These marketers often overstate the size of the possible response, claim to provide a “cure” rather than pain relief or incorrectly suggest that only their own expensive products will have this effect. Even worse, they may present the products as an alternative to more effective traditional medications for serious conditions such as cancer. In other words, they prey on the vulnerable by making undeliverable promises, purportedly backed by the science of placebo.

Even if taking a placebo can reduce symptoms such as pain, this isn’t always the best course of action. An apparently trivial pain may, for example, be the first sign of something far more serious. Treating the pain alone may prevent diagnosis by a physician or delay important medical treatments…

…Education, communication and honesty are the best friends of medical practice. Patients and health care professionals deserve to know what placebos can and cannot do.

The research and medical communities must be more transparent about the efficacy of many conventional pharmacological and nonpharmacological treatments, by acknowledging that some of them are useful whereas some others are not. Many over-the-counter products have doubtful efficacy, for example. Honesty will boost patients’ trust and confidence in medicine, which are the best antidotes to quackery.

 

BRAVO PROF BENEDETTI!

Many systematic reviews have summarized the evidence on spinal manipulative therapy (SMT) for low back pain (LBP) in adults. Much less is known about the older population regarding the effects of SMT. This paper assessed the effects of SMT on pain and function in older adults with chronic LBP in an individual participant data (IPD) meta-analysis.

Electronic databases were searched from 2000 until June 2020; reference lists of eligible trials and related reviews were also searched. Randomized controlled trials (RCTs) were considered if they examined the effects of SMT in adults with chronic LBP compared to interventions recommended in international LBP guidelines. The authors of trials eligible for the IPD meta-analysis were contacted and invited to share data. Two review authors conducted a risk of bias assessment. Primary results were examined in a one-stage mixed model, and a two-stage analysis was conducted in order to confirm the findings. The main outcomes and measures were pain and functional status examined at 4, 13, 26, and 52 weeks.

A total of 10 studies were retrieved, including 786 individuals; 261 were between 65 and 91 years of age. There was moderate-quality evidence that SMT results in similar outcomes at 4 weeks (pain: mean difference [MD] – 2.56, 95% confidence interval [CI] – 5.78 to 0.66; functional status: standardized mean difference [SMD] – 0.18, 95% CI – 0.41 to 0.05). Second-stage and sensitivity analysis confirmed these findings.

The authors concluded that SMT provides similar outcomes to recommended interventions for pain and functional status in the older adult with chronic LBP. SMT should be considered a treatment for this patient population.

This is a fine analysis. Unfortunately, its results are less than fine. Its results confirm what I have been saying ad nauseam: we do not currently have a truly effective therapy for back pain, and most options are as good or as bad as the rest. This is most frustrating for everyone concerned, but it is certainly no reason to promote SMT as usually done by chiropractors or osteopaths.

The only logical solution, in my view, is to use those options that:

  • are associated with the least risks,
  • are the least expensive,
  • are widely available.

However you twist and turn the existing evidence, the application of these criteria does not come up with chiropractic or osteopathy as an optimal solution. The best treatment is therapeutic exercise initially taught by a physiotherapist and subsequently performed as a long-term self-treatment by the patient at home.

 

When I first saw this, I was expecting something like If Homeopathy Beats Science (Mitchell and Webb) – YouTube : videos (reddit.com). But no, “Acute Care Homeopathy for Medical Professionals” is not a masterpiece by gifted satirists. It is much better; it is for real! In fact, it is a collaboration between the “Academy of Homeopathy Education” (AHE) and the American Institute of Homeopathy (AIH). Together, they published the following announcement:

AHE and AIH are pleased to present a customized educational program designed for busy medical professionals interested in enhancing their practice and expanding the treatment tools available with Homeopathy. Grounded in the original theory and philosophy of Homeopathy, AHE’s quality curriculum empowers practitioners and the material’s inspirational delivery encourages further study towards the mastery of Homeopathy for chronic care.

This course is open to all licensed healthcare providers— medical, osteopathic, naturopathic, dentists, chiropractors, veterinarians, nurse practitioners, nurses, physician assistants, pharmacologists and pharmacists.

Acute-care homeopathy addresses the challenges of 21st-century medical practice.

Among many things, you’ll learn safe and effective ways to manage pain and mitigate antibiotic overuse with FDA-regulated and approved Homeopathic remedies. AHE delivers an integrated learning experience that combines online real-time classroom experiences culminating in a telehealth based clinical internship allowing participants to study from anywhere in the world.

AHE’s team of Homeopathy experts have taught thousands of students around the globe and are known for unparalleled academic rigor, comprehensive clinical training, and robust research initiatives. AHE ensures that every graduate develops the necessary critical thinking skills in homeopathy case taking, analysis, and prescribing to succeed in practice with confidence and competence.

  • Smart and savvy tech support team helps to on-board and train even the most reticent digital participants
  • Academic support professionals provide an educational safety-net
  • Stellar faculty to inspire confidence and encourage students to achieve their best work
  • “Fireside Chats,” forums, and social gatherings build community
  • Tried and true administrative systems keep things running smoothly so you can focus on learning Homeopathy.

All AHE students receive Radar Opus, the leading software package used by professional homeopaths worldwide.

Upon completion of the didactic program, practitioners begin an Acute Care Internship through AHE and the Homeopathy Help Network’s Acute Care Telehealth Clinic “Homeopathy Help Now” (HHN) which sees thousands of cases each year. Upon successful completion of the internship, practitioners will be invited to participate in ongoing supervised practice through HHN.

AHE is part of a larger vision to shape the future of Homeopathy: HOHM Foundation and the Homeopathy Help NetworkAll clinical services are delivered in an education and research-driven model. HOHM’s Office of Research has multiple peer-reviewed publications focused on education, practice, and clinical outcomes. HOHM is committed to funding Homeopathy study and research at every level.

The Academy of Homeopathy Education (AHE) operates in conjunction with HOHM Foundation, a 501c3 initiative committed to education, advocacy, and access. The Homeopathy Help Network is a telehealth clinic providing fee-for-service chronic care as well as donation-based acute care through Homeopathy Help Now.

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I suspect you simply cannot wait to enroll. To learn more about “Acute Care Homeopathy for Medical Professionals” please fill out the form.

… and don’t forget to pay the fee of US$ 5 500.

No, it’s not expensive, if you think about it. After all, acute-care homeopathy addresses the challenges of 21st-century medical practice.

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