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

evidence

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They say, one has to try everything at least once – except line-dancing and incest. So, when I was invited to co-organize a petition, I considered it and thought: WHY NOT?

Here is the text (as translated by myself) of our petition to the German Medical Association:

 

 

Dear President Dr Reinhardt,

Dear Ms Lundershausen,

Mrs Held,

Dear Ms Johna,

We, the undersigned doctors, would like to draw your attention to the insistence of individual state medical associations on preserving “homeopathy” as a component of continuing medical education. We hope that you, by virtue of your office, will ensure a nationwide regulation so that this form of sham treatment [1], as has already happened in other European countries, can no longer call itself part of medicine.

We justify our request by the following facts:

  1. After the landmark vote in Bremen in September 2019 to remove “homeopathy” from the medical training regulations, 10 other state medical associations have so far followed Bremen’s example. For reasons of credibility and transparency, it would be desirable if the main features of the training content taught were not coordinated locally in the future, but centrally and uniformly across the country so that there is no “training tourism”. Because changes to a state’s own regulations of postgraduate training are only binding for the examination committee of the respective state, this does not affect national regulations but is reduced to only a symbolic character without sufficient effects on the portfolio of medical education nationwide.
  2. Medicine always works through the combination of a specifically effective part and non-specific placebo effects. By insisting on a pseudo-medical methodology – as is “homeopathy” represents in our opinion – patients are deprived of the specific effective part and often unnecessarily deprived of therapy appropriate to the indication. Tragically, it happens again and again that the “therapeutic window of opportunity” for an appropriate therapy is missed, tumors can grow to inoperable size, etc.
  3. Due to the insistence of individual state medical associations on the “homeopathic doctrine of healing” as part of the medical profession, we are increasingly exposed to the blanket accusation that, by tolerating this doctrine, we are supporting and promoting ways of thinking and world views that are detached from science. This is a dangerous situation, which in times of a pandemic manifests itself in misguided aggression reflected not just in vaccination skepticism and vaccination refusal, but also in unacceptable personal attacks and assaults on vaccinating colleagues in private practice.
[1] Homöopathie – die Fakten [unverdünnt] eBook : Ernst, Edzard, Bretthauer, Jutta: Amazon.de: Kindle-Shop

Responsible:

Dr. med. Dent. Hans-Werner Bertelsen

Prof. Dr. med. Edzard Ernst

George A. Rausche

You can sign the petition here:

Petition an die Bundesärztekammer › Sachverständiger kriminalistische Forensik, Foto- Videoforensik, digitale Forensik und der Identifikation lebender Personen nach Bildern (rauscher.xyz)

 

Static or motion manual palpation tests of the spine are commonly used by chiropractors and osteopaths to assess pain location and reproduction in low back pain (LBP) patients. But how reliable are they?

The purpose of this review was to evaluate the reliability and validity of manual palpation used for the assessment of LBP in adults. The authors systematically searched five databases from 2000 to 2019 and critically appraised the internal validity of studies using QAREL and QUADAS-2 instruments.

A total of 2023 eligible articles were identified, of which 14 were at low risk of bias. Evidence suggests that reliability of soft tissue structures palpation is inconsistent, and reliability of bony structures and joint mobility palpation is poor. Preliminary evidence was found to suggest that gluteal muscle palpation for tenderness may be valid in differentiating LBP patients with and without radiculopathy.

The authors concluded that the reliability of manual palpation tests in the assessment of LBP patients varies greatly. This is problematic because these tests are commonly used by manual therapists and clinicians. Little is known about the validity of these tests; therefore, their clinical utility is uncertain. High quality validity studies are needed to inform the clinical use of manual palpation tests.

I have repeatedly drawn attention to the fact that the diagnostic methods used by chiropractors and osteopaths are of uncertain or disproven validity (see for instance here, or here). Why is that important?

Imagine you consult a chiropractor or osteopath. Simply put, this is what is likely to happen:

  • They listen to your complaint.
  • They do a few tests which are of dubious validity.
  • They give you a diagnosis that is meaningless.
  • They treat you with manual therapies that are neither effective nor safe.
  • You pay.
  • They persuade you that you need many more sessions.
  • You pay regularly.
  • When eventually your pain has gone away, they persuade you to have useless maintenance treatment.
  • You pay regularly.

In a nutshell, they have very little to offer … which explains why they attack everyone who dares to disclose this.

Prior research has generated inconsistent results regarding vaccination rates among patients using so-called alternative medicine (SCAM). Given that SCAM includes a wide range of therapies – about 400 different treatments have been counted – variable vaccination patterns may occur within consultations with different types of SCAM practitioners.

A recent analysis aimed to evaluate differences between categories of SCAM regarding vaccination behavior among US adults.

Data from the 2017 National Health Interview Survey (NHIS; n = 26,742; response rate 80.7%) were used. Prevalences of flu vaccination, consultations with SCAM practitioners in the past 12 months, and their potential interactions were examined. 42.7% of participants had received the flu vaccination in the past 12 months, 32.4% had seen one or more SCAM practitioners. Users of any type of SCAM were as likely as non-users to have received a flu vaccination (44.8% users versus 41.7% non-users; p = 0,862; adjusted odds ratio [AOR] = 1.01, 95% confidence interval [CI] = 0.95–1.07).

Regarding specific SCAM types,

  • individuals consulting with naturopaths (p < 0.001; AOR = 0.67, 95 %CI = 0.54–0.82),
  • homeopaths (p < 0.001; AOR = 0.55; 95 %CI = 0.44–0.69)
  • chiropractors (p = 0.016; AOR = 0.9, 95 %CI = 0.83–0.98)

were less likely to be vaccinated. Other SCAMs showed no significant association with flu vaccination behavior. Independent predictors for a flu shot were prior diabetes, cancer, current asthma, kidney disease, overweight and current pregnancy. As well, higher educational level, age, ethnicity, health insurance coverage, and having seen a general physician or medical specialist in the past 12 months were also associated with a higher vaccination rate.

The authors concluded that SCAM users were equally likely to receive an influenza vaccination compared with non-users. Different SCAM therapies showed varied associations with vaccination behavior. Further analyses may be needed to distinguish influencing factors among patients’ vaccination behavior.

This survey confirms what we have discussed repeatedly on this blog (see, for instance here, here, here, here, and here). The reason why consumers who consult naturopaths, homeopaths, or chiropractors get vaccinated less regularly is presumably that these practitioners tend to advise against vaccinations. And why do they do that?

  • Naturopaths claim that vaccines are toxic and their therapeutic options protect against infections.
  • Homeopaths claim that vaccines are toxic and their therapeutic options protect against infections.
  • Chiropractors claim that vaccines are toxic and their therapeutic options protect against infections.

Do these ‘therapeutic options’ – detox, nosodes, spinal manipulation – have anything in common?

Yes, they are bogus!

Conclusion:

Many naturopaths, homeopaths, and chiropractors seem to be a risk to public health.

It has recently been reported that a Canadian naturopath claims he can treat autism with fecal transplants at a clinic in Mexico.  The College of Naturopathic Physicians of B.C. has thus barred him stating that it has taken “extraordinary action” against Jason Klop in response to a complaint from a whistle-blowing former employee, who alleges that he manufactured these products in a “household lab” in B.C. without standard procedures or quality control.

While the complaint is under investigation, Klop cannot manufacture, advertise or sell fecal microbiota transplants (FMT). He’ll also be subject to random on-site audits to make sure he’s not violating his conditions.

This is the first public sign of concrete action by the college since CBC News reported on Klop’s business in January 2020 — nearly 20 months ago. Klop has been charging about $15,000 US for autistic children as young as two years old to have FMT treatment at a clinic near Tijuana. The process isn’t approved as a treatment of autism and carries serious risks of infection.

An illustration shows how fecal microbiota transplants are produced. (Vancouver Island Health Authority)

In a promotional video posted in January, Klop says he believes that “precision manipulation of the gut microbiome will solve every single chronic disease.” He also issued an affidavit boasting that he has a new lab that “produces the best and safest FMT materials in the world” and described the former employee who complained as “manifestly unreliable.” Klop argued that “lives are at stake” if he were to stop what he’s doing and described his therapy as a “life-saving measure.”

_____________________

Is there any evidence at all for FMT as a treatment of autism? A recent systematic review drew this conclusion: evidence from human studies suggesting beneficial effects of probiotic, prebiotic, and combination thereof, as well as fecal transplants in autism spectrum disorder, is limited and inconclusive.

 

 

I was alerted to this announcement by the Faculty of Homeopathy:

Faculty of Homeopathy Accredited Education

The role of Dentistry in Integrative Medicine and Homeopathy

Dentistry appears to be the Cinderella of healthcare and the importance of good oral health is hugely underestimated. The mouth is the portal into the rest of our bodies. There is increasing evidence proving that health of the oral cavity has strong links with the health of the rest of the body especially increasing risk of heart disease, low birth weight babies and type 2 diabetes. The aim of this webinar is to highlight the vital importance of dentistry and oral health in integrative medicine and why healthcare professionals need to work closely with dentists. It will also cover how, as homeopaths, we can appreciate symptoms in the mouth as indications of general health or disease and manage dental conditions.

THE TICKETS FOR THIS WEBINAR ARE LIMITED THEREFORE, PLEASE REGISTER NOW TO ENSURE ACCESS.

Some splendid platitudes there:

  • the Cinderella of healthcare
  • The mouth is the portal into the rest of our bodies
  • health of the oral cavity has strong links with the health of the rest of the body…

But what about the importance of dentistry in integrative medicine? The importance of dentistry in medicine is fairly clear to me. However, what is the importance of dentistry in integrative medicine?

Even more puzzling seems the ‘role of dentistry in homeopathy’? What on earth do they mean by that? Perhaps they meant the ‘role of homeopathy in dentistry’?

And what is the role of homeopathy in dentistry? The British Homeopathic Dental Association should know, shouldn’t they? On their website, they explain that they are a group of dentists and dental care professionals that have an interest in using homeopathy alongside our dentistry.

On the basis of what evidence, you ask? They kindly provide an answer to that question:

In dentistry there is limited research though studies have shown improved bone healing around implants with Symphytum and reduced discomfort and improved healing time with ulcers and beneficial in oral lichen planus. These studies have small numbers and are not generally acepted as stong evidence.

Are they trying to tell us that there is no good evidence? Looks like it, doesn’t it? In this case, the above Webinar seems rather superfluous.

For those of you who want to save the money for the tickets, here is a full and evidence-based summary of all the conditions where homeopathy might be helpful in dentistry:

THE END

 

Cannabis seems often to be an emotional subject where more heat than light is generated. Does it work for chronic pain? This cannot be such a difficult question to answer definitively. Yet, systematic reviews have provided conflicting results due, in part, to limitations of analytical approaches and interpretation of findings.

A new systematic review is therefore both necessary and welcome. It aimed at determining the benefits and harms of medical cannabis and cannabinoids for chronic pain. Included were all randomised clinical trials of medical cannabis or cannabinoids versus any non-cannabis control for chronic pain at ≥1-month follow-up.

A total of 32 trials with 5174 adult patients were included, 29 of which compared medical cannabis or cannabinoids with placebo. Medical cannabis was administered orally (n=30) or topically (n=2). Clinical populations included chronic non-cancer pain (n=28) and cancer-related pain (n=4). Length of follow-up ranged from 1 to 5.5 months.

Compared with placebo, non-inhaled medical cannabis probably results in a small increase in the proportion of patients experiencing at least the minimally important difference (MID) of 1 cm (on a 10 cm visual analogue scale (VAS)) in pain relief (modelled risk difference (RD) of 10% (95% confidence interval 5% to 15%), based on a weighted mean difference (WMD) of −0.50 cm (95% CI −0.75 to −0.25 cm, moderate certainty)). Medical cannabis taken orally results in a very small improvement in physical functioning (4% modelled RD (0.1% to 8%) for achieving at least the MID of 10 points on the 100-point SF-36 physical functioning scale, WMD of 1.67 points (0.03 to 3.31, high certainty)), and a small improvement in sleep quality (6% modelled RD (2% to 9%) for achieving at least the MID of 1 cm on a 10 cm VAS, WMD of −0.35 cm (−0.55 to −0.14 cm, high certainty)). Medical cannabis taken orally does not improve emotional, role, or social functioning (high certainty). Moderate certainty evidence shows that medical cannabis taken orally probably results in a small increased risk of transient cognitive impairment (RD 2% (0.1% to 6%)), vomiting (RD 3% (0.4% to 6%)), drowsiness (RD 5% (2% to 8%)), impaired attention (RD 3% (1% to 8%)), and nausea (RD 5% (2% to 8%)), but not diarrhoea; while high certainty evidence shows greater increased risk of dizziness (RD 9% (5% to 14%)) for trials with <3 months follow-up versus RD 28% (18% to 43%) for trials with ≥3 months follow-up; interaction test P=0.003; moderate credibility of subgroup effect).

The authors concluded that moderate to high certainty evidence shows that non-inhaled medical cannabis or cannabinoids results in a small to very small improvement in pain relief, physical functioning, and sleep quality among patients with chronic pain, along with several transient adverse side effects, compared with placebo.

This is a high-quality review. Its findings will disappoint the many advocates of cannabis as a therapy for chronic pain management. The bottom line, I think, seems to be that cannabis works but the effect is not very powerful, while we have treatments for managing chronic pain that are both more effective and arguably less risky. So, its place in clinical routine is debatable.

PS

Cannabis is, of course, a herbal remedy and therefore belongs to so-called alternative medicine (SCAM). Yet, I am aware that the medical cannabis preparations used in most studies are based on single cannabinoids which makes them conventional medicines.

The authors of this review start their paper with the following statement:

Acupuncture has demonstrated effectiveness for symptom management among breast cancer survivors.

This, I think, begs the following question: if they already know that, why do they conduct a systematic review of the subject?

The answer becomes clear as we read thier article: they want to add another paper to the literature that shows they are correct in their assumption.

So, they do the searches and found 26 trials (2055 patients), of which 20 (1709 patients) could be included in the meta-analysis. Unsurprisingly, their results show that acupuncture was more effective than control groups in improving pain intensity [standardized mean difference (SMD) = -0.60, 95% confidence intervals (CI) -1.06 to -0.15], fatigue [SMD = -0.62, 95% CI -1.03 to -0.20], and hot flash severity [SMD = -0.52, 95% CI -0.82 to -0.22].  Compared with waitlist control and usual care groups, the acupuncture groups showed significant reductions in pain intensity, fatigue, depression, hot flash severity, and neuropathy. No serious adverse events were reported related to acupuncture intervention. Mild adverse events (i.e., bruising, pain, swelling, skin infection, hematoma, headache, menstrual bleeding) were reported in 11 studies.

The authors concluded that this systematic review and meta-analysis suggest that acupuncture significantly reduces multiple treatment-related symptoms compared with the usual care or waitlist control group among breast cancer survivors. The safety of acupuncture was inadequately reported in the included studies. Based on the available data, acupuncture seems to be generally a safe treatment with some mild adverse events. These findings provide evidence-based recommendations for incorporating acupuncture into clinical breast cancer symptom management. Due to the high risk of bias and blinding issues in some RCTs, more rigorous trials are needed to confirm the efficacy of acupuncture in reducing multiple treatment-related symptoms among breast cancer survivors.

Yes, I agree: this is an uncritical white-wash of the evidence. So, why do I bother to discuss this paper? After all, the acupuncture literature is littered with such nonsense.

Well, to my surprise, the results did contain a little gem after all.

A subgroup analysis of the data indicated that acupuncture showed no significant effects on any of the treatment-related symptoms compared with the sham acupuncture groups.

In other words, this paper confirms what has been discussed repeatedly on this blog (see for instance here, here, and here):

Acupuncture seems to be a placebo therapy!

Acupuncture is usually promoted as a safe therapy. This may be good marketing but, sadly, it is not the truth. About 10% of all patients experience mild to moderate adverse effects such as pain or bleeding. In addition, there are well-documented complications, for instance:

However, there have been few reports of deaths due to pneumothorax after acupuncture treatment, especially focused on electroacupuncture.

Japanese authors recently reported an autopsy case of a man in his 60s who went into cardiopulmonary arrest and died immediately after receiving electroacupuncture. Postmortem computed tomography (PMCT) showed bilateral pneumothoraces, as well as the presence of numerous gold threads embedded subcutaneously. An autopsy revealed two ecchymoses in the right thoracic cavity and a pinhole injury on the lower lobe of the right lung, suggesting that the needles had penetrated the lung. There were marked emphysematous changes in the lung, suggesting that rupture of bullae might also have contributed to bilateral pneumothoraces and fatal outcomes. The acupuncture needles may have been drawn deeper into the body than at the time of insertion due to electrical pulses and muscle contraction, indicating the need for careful determination of treatment indications and technical safety measures, such as fail-safe mechanisms.

This is the first case report of fatal bilateral pneumothoraces after electroacupuncture reported in the English literature. This case sheds light on the safety of electroacupuncture and the need for special care when administering it to patients with pulmonary disease who may be at a higher risk of pneumothorax. This is also the first report of three-dimensional reconstructed PMCT images showing the whole-body distribution of embedded gold acupuncture threads, which is unusual.

One-sided pneumothoraxes are common events after acupuncture. Several hundred cases have been published and the vast majority of such incidents remain unpublished or even unnoticed. These events are not normally life-threatening. If ‘only’ one lung is punctured, the patient may experience breathing difficulties, but in many cases these are temporary and the patient soon recovers.

Yet a bilateral pneumothorax is an entirely different affair. If both lungs malfunction, the patient’s chances of survival are slim unless he/she is close to an intensive care unit.

You might think that it needs an especially ungifted acupuncturist to manage to puncture both lungs simultaneously. I might agree, but we need to consider that acupuncture needles are often inserted in a symmetrical fashion into the patient’s body. This means that, if the therapist puts a needle at one point of the thorax that is close to a lung, he is not unlikely to do the same on the other side.

And how does one prevent such disasters?

Easy:

  • train acupuncturists properly,
  • avoid needles on the upper thorax,
  • or refuse acupuncture altogether.

 

 

Research on glucosamine, one of the most popular dietary supplements, shows anti-inflammatory and anti-cancer benefits with minimal adverse effects. An international team of researchers aimed to explore the relationship between the use of glucosamine and the risk of lung cancer and lung cancer mortality based on data from the large-scale nationwide prospective UK Biobank cohort study.

Participants were enrolled between the years 2006 and 2010 and followed up to 2020. The Cox proportion hazards model was used to assess the relationship between glucosamine use and the risk of lung cancer and lung cancer mortality. Subgroup analyses and sensitivity analyses were performed to explore the potential effect modifications and the robustness of the main findings.

A total of 439,393 participants (mean age: 56 years; 53% females) with a mean follow-up of 11 years were included for analyses. There were 82,603 (18.80%) participants reporting regular use of glucosamine at baseline. During follow-up, there were 1,971 (0.45%) lung cancer events documented. Glucosamine use was significantly associated with a decreased risk of lung cancer (hazard ratio=0.84, 95% CI: 0.75-0.92, p<0.001) and lung cancer mortality (hazard ratio=0.88, 95% CI: 0.81-0.96, p=0.002) in fully adjusted models. A stronger association between glucosamine use and decreased lung cancer risk was observed in participants with a family history of lung cancer when compared to those without a family history.

The authors concluded that regular use of glucosamine was significantly related with decreased risk of lung cancer and lung cancer mortality, based on data from this nationwide prospective cohort study.

A previous analysis of the same data concluded that regular glucosamine supplementation was associated with lower mortality due to all causes, cancer, CVD, respiratory and digestive diseases. The new analysis shows a strong association with lung cancer.

This is certainly interesting, but does it prove a causal relationship?

The answer is no.

Correlation is not causation!

What would be helpful in testing whether we are dealing with a cause-effect relationship?

  1. We need data from other studies. Several other epidemiological investigations indicated that glucosamine use might play a role in the prevention of cancer.
  2. We require to know the strength of the association. The new analysis suggests that it is indeed strong.
  3. We need a mode of action. Might the anti-inflammatory action of glucosamine explain the effect?
  4. We should ask whether there is a dose-response relationship. As far as I know, this has not been addressed as yet.
  5. Ideally, we would require a randomized trial to test the hypothesis. But I fear that such a study might be too difficult to conduct and will thus not be forthcoming.

And what if glucosamine should one day be proven to reduce the cancer risk? Would it become the first ALTERNATIVE measure to prevent cancer?

Certainly not!

It would automatically become a conventional method of cancer prevention. All the research into the subject has been entirely conventional and is unrelated to the alternative medicine movement. Or, to put it bluntly, alternative cancer prevention is a contradiction in terms. Either it works in which case it is conventional medicine, or it doesn’t in which case it is not even an alternative but at best so-called alternative medicine.

 

Bromelain, papain and chymotrypsin are proteolytic enzymes. They can be found in fruits such as pineapple or papaya, but also in the human body, namely in the pancreas. Besides their enzymatic functions, they have long been said to have a wide range of positive health effects. For instance, it is claimed that they reduce side effects and even improve the outcome of cancer therapies. This systematic review examined the existing evidence on the role that these enzymes which are available as food supplements might play in cancer treatment.

A total of 15 studies with 3,008 patients could be included in this systematic review. Patients treated with enzymes were diagnosed with various entities of gastrointestinal, gynecologic, head and neck, and lung cancer as well as hematological malignancies. The therapy concepts included mainly oral intake of enzymes in addition to conventional therapies. Investigated outcomes were:

  • side-effects of anticancer therapy,
  • quality of life,
  • anticancer effects,
  • survival rates.

Due to conflicting results and moderate quality of the included studies, the evidence is insufficient to attribute positive effects to enzymes in terms of better tolerability of the various antineoplastic therapies or even improvement in treatment efficacy. In most cases, enzyme therapy was well tolerated; side-effects were mainly gastrointestinal complaints such as diarrhea or meteorism.

The authors concluded that there is no clear therapeutic benefit of enzymes neither as supportive therapy nor as part of antineoplastic therapy.

I fully agree with this conclusion. In fact, in my new book that is just being published, I summarised the evidence for enzyme therapy (and many more alternative cancer therapies) in very similar terms: the evidence to suggest that enzyme therapy might be an effective treatment for any type of cancer is less than convincing.

I find it highly irresponsible to claim otherwise. Cancer patients are vulnerable and can easily be tempted to opt for one of the many quack treatments that are said to be both effective and free of nasty adverse effects. If they do try such options, they usually pay dearly, and not just in monetary terms.

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