One of the UK’s most ardent promoters of outright unproven and disproven therapies must be Dr Michael Dixon. He has repeatedly and deservedly received a mention on this blog. Steven Novella even called him once a ‘pyromaniac in a field of (integrative) straw men’. This is because Steven felt that Dixon uses phony arguments to promote dodgy therapies. If you find this hard to believe (after all Dixon is a GP who heads important organisations such as the NHS Alliance and the College of Medicine), just look at him dabbling in spiritual healing. Unusual, to say the least, I’d say. If you want to learn more about the strange Dr Dixon, you should read my memoir where he makes several remarkable appearances.
I always delight when I stumble over something that one of my former co-workers (yes, Dixon and I did collaborate for many years) has said to the press. This is why an otherwise silly article in the Daily Mail (yes, I know!) caught my attention; here is the relevant section: Dr Mike Dixon, a GP in Cullompton, Devon, and chairman of the College of Medicine, says he is a ‘fan’ of herbal medicines because they are ‘safe, help to encourage self-care by patients and, in cases such as mint and aloe vera, can be grown by the patients themselves, making them virtually free’.
As I already pointed out, Dixon does tend to promote bizarre concepts. The generalisation that herbal remedies are safe is not just bizarre, it also put the public at risk. One does not need to search long to find an article that makes this clear:
Various reports suggest a high contemporaneous prevalence of herb-drug use in both developed and developing countries. The World Health Organisation indicates that 80% of the Asian and African populations rely on traditional medicine as the primary method for their health care needs. Since time immemorial and despite the beneficial and traditional roles of herbs in different communities, the toxicity and herb-drug interactions that emanate from this practice have led to severe adverse effects and fatalities. As a result of the perception that herbal medicinal products have low risk, consumers usually disregard any association between their use and any adverse reactions hence leading to underreporting of adverse reactions. This is particularly common in developing countries and has led to a paucity of scientific data regarding the toxicity and interactions of locally used traditional herbal medicine. Other factors like general lack of compositional and toxicological information of herbs and poor quality of adverse reaction case reports present hurdles which are highly underestimated by the population in the developing world. This review paper addresses these toxicological challenges and calls for natural health product regulations as well as for protocols and guidance documents on safety and toxicity testing of herbal medicinal products.
Dixon once told me that GPs do not any longer read scientific papers. I think, however, that he should start doing so before the next time he misinform the public and endangers the health of vulnerable people.
The task of UK Clinical Commissioning Groups (CCGs) is to ensure NHS funds are spent as effectively and responsibly as possible. This is particularly important in the current financial climate, as NHS budgets are under enormous pressure. For that reason, The Good Thinking Society (GTS, a pro-science charity) invited Liverpool CCG to reconsider whether the money (~ £ 30,000 pa) they spend on homeopathy represents good service to the public. Recently the CCG agreed to make a fresh decision on this contentious issue.
The GTS would prefer to see limited NHS resources spent on evidence-based medicine rather than on continued funding of homeopathy which, as readers of this blog will know, has repeatedly failed to demonstrate that it is doing more good than harm. It is encouraging to see Liverpool CCG take a first step in the right direction by agreeing to properly consider the best evidence and expertise on this issue.
Supporters of homeopathy frequently cite the concept of patient choice and claim that, if patients want homeopathy, they should have it free on the NHS. The principle is obviously important, but it is crucial that this choice is an informed one. The best evidence has conclusively shown that homeopathy is not an effective treatment, and to continue to offer ineffective treatments under the guise of patient choice raises troubling questions about the important concept of informed choice, and indeed of informed consent as well as medical ethics.
The GTS were represented by Salima Budhani and Jamie Potter of Bindmans LLP. Salima said: “This case underlines the necessity of transparent and accountable decision making by the controllers of health budgets, particularly in the light of the current financial climate in the NHS. CCGs have legal obligations to properly consider relevant evidence, as well as the views of experts and residents, in deciding how precious NHS resources are to be spent. It is essential that commissioning decisions are rational and evidence-based. Liverpool CCG’s decision to reconsider its position on the funding of homeopathy in these circumstances is to be welcomed.
“Our client has also called upon the Secretary of State for Health to issue guidance on the funding of homeopathy on the NHS. Public statements by the Secretary of State indicate that he does not support ongoing funding, yet he has so far declined to ask NICE to do any work on this issue. The provision of such guidance would be of significant benefit to CCGs in justifying decisions to terminate funding.”
Commenting on their decision, a Liverpool CCG spokesperson said: “Liverpool CCG currently resources a small homeopathy contract to the value of £30,000 per year that benefits a small number of patients in the city who choose to access NHS homeopathy care and treatment services. The CCG has agreed with the Good Thinking Society to carry out further engagement with patients and the general public to inform our future commissioning intentions for this service.”
Over the last two decades, prescriptions fulfilled in community pharmacies for homeopathy on the NHS in England have fallen by over 94% and homeopathic hospitals have seen their funding reallocated. This reduction indicates that the majority of doctors and commissioning bodies have acted responsibly by terminating funding for homeopathic treatments.
The GTS are currently fundraising in order to fund further legal challenges – donate now to support our campaign at justgiving.com/Good-Thinking-Society-Appeal/.
As I grew up in Germany, it was considered entirely normal that I was given homeopathic remedies when ill. I often wondered whether, with the advent of EBM, this has changed. A recent paper provides an answer to this question.
In this nationwide German survey, data were collected from 3013 children on their utilization of medicinal products, including homeopathic and other alternative remedies.
In all, 26% of the reported 2489 drugs were from the realm of alternative medicine. The 4-week prevalence for homeopathy was 7.5%. Of the drugs identified as alternative, 53.7% were homeopathic remedies, and 30.8% were herbal drugs. Factors associated with higher medicinal use of alternative remedies were female gender, residing in Munich, and higher maternal education. A homeopathy user utilized on average homeopathic remedies worth EUR 15.28. The corresponding figure for herbal drug users was EUR 16.02, and EUR 18.72 for overall medicinal CAM users. Compared with data from 4 years before, the prevalence of homeopathy use had declined by 52%.
The authors concluded that CAM use among 15-year-old children in the GINIplus cohort is popular, but decreased noticeably compared with children from the same cohort at the age of 10 years. This is possibly mainly because German health legislation normally covers CAM for children younger than 12 years only.
The survey shows that homeopathy is still a major player in the health care of German children. From the point of view of a homeopath, this makes a lot of sense: children are supposed to respond particularly well to homeopathy. But is that really true? The short answer is NO.
Our systematic review of all relevant studies tells it straight: 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.
In other words, the evidence is very much at odds with the practice. This begs the question, I think, HOW SHOULD WE INTERPRET THIS DISCREPANCY?
A few possibilities come into mind, and I would be grateful to hear from my readers which they think might be correct:
- Homeopathy is used as a ‘benign placebo’ [clinicians know that most paediatric conditions are self-limiting and thus prefer to give placebos rather than drugs that can cause adverse effects].
- Doctors prescribe homeopathy mainly because the kids’ parents insist on them.
- Doctors believe that homeopathic remedies are more than just placebos [in which case they are clearly ill-informed].
- German doctors do not believe in scientific evidence and prefer to rely on their intuition.
- This high level of homeopathy usage misleads the next generation into believing in quackery.
- It amounts to child abuse and should be stopped.
Distant healing is one of the most bizarre yet popular forms of alternative medicine. Healers claim they can transmit ‘healing energy’ towards patients to enable them to heal themselves. There have been many trials testing the effectiveness of the method, and the general consensus amongst critical thinkers is that all variations of ‘energy healing’ rely entirely on a placebo response. A recent and widely publicised paper seems to challenge this view.
This article has, according to its authors, two aims. Firstly it reviews healing studies that involved biological systems other than ‘whole’ humans (e.g., studies of plants or cell cultures) that were less susceptible to placebo-like effects. Secondly, it presents a systematic review of clinical trials on human patients receiving distant healing.
All the included studies examined the effects upon a biological system of the explicit intention to improve the wellbeing of that target; 49 non-whole human studies and 57 whole human studies were included.
The combined weighted effect size for non-whole human studies yielded a highly significant (r = 0.258) result in favour of distant healing. However, outcomes were heterogeneous and correlated with blind ratings of study quality; 22 studies that met minimum quality thresholds gave a reduced but still significant weighted r of 0.115.
Whole human studies yielded a small but significant effect size of r = .203. Outcomes were again heterogeneous, and correlated with methodological quality ratings; 27 studies that met threshold quality levels gave an r = .224.
From these findings, the authors drew the following conclusions: Results suggest that subjects in the active condition exhibit a significant improvement in wellbeing relative to control subjects under circumstances that do not seem to be susceptible to placebo and expectancy effects. Findings with the whole human database suggests that the effect is not dependent upon the previous inclusion of suspect studies and is robust enough to accommodate some high profile failures to replicate. Both databases show problems with heterogeneity and with study quality and recommendations are made for necessary standards for future replication attempts.
In a press release, the authors warned: the data need to be treated with some caution in view of the poor quality of many studies and the negative publishing bias; however, our results do show a significant effect of healing intention on both human and non-human living systems (where expectation and placebo effects cannot be the cause), indicating that healing intention can be of value.
My thoughts on this article are not very complimentary, I am afraid. The problems are, it seems to me, too numerous to discuss in detail:
- The article is written such that it is exceedingly difficult to make sense of it.
- It was published in a journal which is not exactly known for its cutting edge science; this may seem a petty point but I think it is nevertheless important: if distant healing works, we are confronted with a revolution in the understanding of nature – and surely such a finding should not be buried in a journal that hardly anyone reads.
- The authors seem embarrassingly inexperienced in conducting and publishing systematic reviews.
- There is very little (self-) critical input in the write-up.
- A critical attitude is necessary, as the primary studies tend to be by evangelic believers in and amateur enthusiasts of healing.
- The article has no data table where the reader might learn the details about the primary studies included in the review.
- It also has no table to inform us in sufficient detail about the quality assessment of the included trials.
- It seems to me that some published studies of distant healing are missing.
- The authors ignored all studies that were not published in English.
- The method section lacks detail, and it would therefore be impossible to conduct an independent replication.
- Even if one ignored all the above problems, the effect sizes are small and would not be clinically important.
- The research was sponsored by the ‘Confederation of Healing Organisations’ and some of the comments look as though the sponsor had a strong influence on the phraseology of the article.
Given these reservations, my conclusion from an analysis of the primary studies of distant healing would be dramatically different from the one published by the authors: DESPITE A SIZABLE AMOUNT OF PRIMARY STUDIES ON THE SUBJECT, THE EFFECTIVENESS OF DISTANT HEALING REMAINS UNPROVEN. AS THIS THERAPY IS BAR OF ANY BIOLOGICAL PLAUSIBILITY, FURTHER RESEARCH IN THIS AREA SEEMS NOT WARRANTED.
Twenty years ago, I published a short article in the British Journal of Rheumatology. Its title was ALTERNATIVE MEDICINE, THE BABY AND THE BATH WATER. Reading it again today – especially in the light of the recent debate (with over 700 comments) on acupuncture – indicates to me that very little has since changed in the discussions about alternative medicine (AM). Does that mean we are going around in circles? Here is the (slightly abbreviated) article from 1995 for you to judge for yourself:
“Proponents of alternative medicine (AM) criticize the attempt of conducting RCTs because they view this is in analogy to ‘throwing out the baby with the bath water’. The argument usually goes as follows: the growing popularity of AM shows that individuals like it and, in some way, they benefit through using it. Therefore it is best to let them have it regardless of its objective effectiveness. Attempts to prove or disprove effectiveness may even be counterproductive. Should RCTs prove that a given intervention is not superior to a placebo, one might stop using it. This, in turn, would be to the disadvantage of the patient who, previous to rigorous research, has unquestionably been helped by the very remedy. Similar criticism merely states that AM is ‘so different, so subjective, so sensitive that it cannot be investigated in the same way as mainstream medicine’. Others see reasons to change the scientific (‘reductionist’) research paradigm into a broad ‘philosophical’ approach. Yet others reject the RCTs because they think that ‘this method assumes that every person has the same problems and there are similar causative factors’.
The example of acupuncture as a (popular) treatment for osteoarthritis, demonstrates the validity of such arguments and counter-arguments. A search of the world literature identified only two RCTs on the subject. When acupuncture was tested against no treatment, the experimental group of osteoarthritis sufferers reported a 23% decrease of pain, while the controls suffered a 12% increase. On the basis of this result, it might seem highly unethical to withhold acupuncture from pain-stricken patients—’if a patient feels better for whatever reason and there are no toxic side effects, then the patient should have the right to get help’.
But what about the placebo effect? It is notoriously difficult to find a placebo indistinguishable to acupuncture which would allow patient-blinded studies. Needling non-acupuncture points may be as close as one can get to an acceptable placebo. When patients with osteoarthritis were randomized into receiving either ‘real acupuncture or this type of sham acupuncture both sub-groups showed the same pain relief.
These findings (similar results have been published for other AMs) are compatible only with two explanations. Firstly acupuncture might be a powerful placebo. If this were true, we need to establish how safe acupuncture is (clearly it is not without potential harm); if the risk/benefit ratio is favourable and no specific, effective form of therapy exists one might still consider employing this form as a ‘placebo therapy’ for easing the pain of osteoarthritis sufferers. One would also feel motivated to research this powerful placebo and identify its characteristics or modalities with the aim of using the knowledge thus generated to help future patients.
Secondly, it could be the needling, regardless of acupuncture points and philosophy, that decreases pain. If this were true, we could henceforward use needling for pain relief—no special training in or equipment for acupuncture would be required, and costs would therefore be markedly reduced. In addition, this knowledge would lead us to further our understanding of basic mechanisms of pain reduction which, one day, might evolve into more effective analgesia. In any case the published research data, confusing as they often are, do not call for a change of paradigm; they only require more RCTs to solve the unanswered problems.
Conducting rigorous research is therefore by no means likely to ‘throw out the baby with the bath water’. The concept that such research could harm the patient is wrong and anti-scientific. To follow its implications would mean neglecting the ‘baby in the bath water’ until it suffers serious damage. To conduct proper research means attending the ‘baby’ and making sure that it is safe and well.
In the realm of homeopathy there is no shortage of irresponsible claims. I am therefore used to a lot – but this new proclamation takes the biscuit, particularly as it currently is being disseminated in various forms worldwide. It is so outrageously unethical that I decided to reproduce it here [in a slightly shortened version]:
“Homeopathy has given rise to a new hope to patients suffering from dreaded HIV, tuberculosis and the deadly blood disease Hemophilia. In a pioneering two-year long study, city-based homeopath Dr Rajesh Shah has developed a new medicine for AIDS patients, sourced from human immunodeficiency virus (HIV) itself.
The drug has been tested on humans for safety and efficacy and the results are encouraging, said Dr Shah. Larger studies with and without concomitant conventional ART (Antiretroviral therapy) can throw more light in future on the scope of this new medicine, he said. Dr Shah’s scientific paper for debate has just been published in Indian Journal of Research in Homeopathy…
The drug resulted in improvement of blood count (CD4 cells) of HIV patients, which is a very positive and hopeful sign, he said and expressed the hope that this will encourage an advanced research into the subject. Sourcing of medicines from various virus and bacteria has been a practise in the homeopathy stream long before the prevailing vaccines came into existence, said Dr Shah, who is also organising secretary of Global Homeopathy Foundation (GHF)…
Dr Shah, who has been campaigning for the integration of homeopathy and allopathic treatments, said this combination has proven to be useful for several challenging diseases. He teamed up with noted virologist Dr Abhay Chowdhury and his team at the premier Haffkine Institute and developed a drug sourced from TB germs of MDR-TB patients.”
So, where is the study? It is not on Medline, but I found it on the journal’s website. This is what the abstract tells us:
“Thirty-seven HIV-infected persons were registered for the trial, and ten participants were dropped out from the study, so the effect of HIV nosode 30C and 50C, was concluded on 27 participants under the trial.
Results: Out of 27 participants, 7 (25.93%) showed a sustained reduction in the viral load from 12 to 24 weeks. Similarly 9 participants (33.33%) showed an increase in the CD4+ count by 20% altogether in 12 th and 24 th week. Significant weight gain was observed at week 12 (P = 0.0206). 63% and 55% showed an overall increase in either appetite or weight. The viral load increased from baseline to 24 week through 12 week in which the increase was not statistically significant (P > 0.05). 52% (14 of 27) participants have shown either stability or improvement in CD4% at the end of 24 weeks, of which 37% participants have shown improvement (1.54-48.35%) in CD4+ count and 15% had stable CD4+ percentage count until week 24 week. 16 out of 27 participants had a decrease (1.8-46.43%) in CD8 count. None of the adverse events led to discontinuation of study.
Conclusion: The study results revealed improvement in immunological parameters, treatment satisfaction, reported by an increase in weight, relief in symptoms, and an improvement in health status, which opens up possibilities for future studies.”
In other words, the study had not even a control group. This means that the observed ‘effects’ are most likely just the normal fluctuations one would expect without any clinical significance whatsoever.
The homeopathic Ebola cure was bad enough, I thought, but, considering the global importance of AIDS, the homeopathic HIV treatment is clearly worse.
My memoir ‘A SCIENTIST IN WONDERLAND’ has already brought many surprises (and about 20 most flattering reviews). A few days ago, the German version was published entitled ‘NAZIS, NADELN UND INTRIGEN’ (people who have not read it might find this title puzzling). The German publisher reported that the first print-run was sold out in the first 4 days.
In order to tempt you to read my memoir, I publish here the final section of the book which affirms that the link between my rather diverse experiences boils down to ethics.
…the most important link between my research into alternative medicine and that related to the Third Reich was that of medical ethics.
It should be axiomatic that ethics is indispensable to the practice of medicine, and is not something that can just be switched off at will. No branch of health care, including alter-native medicine, can be considered exempt from it. But the subject of ethics is seldom even considered in alternative medicine; many alternative practitioners have never been taught medical ethics, and where training in this area does exist, it tends to be at best superficial. There are thousands of books on alternative medicine but hardly more than a handful cover the subject of medical ethics in any depth. It is perhaps not surprising, therefore, that the principles of medical ethics are routinely ignored and frequently violated by promoters of alternative medicine.
Medical ethics seem to me to be violated, for example: when homeopaths prescribe or recommend homeopathic vaccinations for which there is not a shred of evidence; when chiropractors or other alternative practitioners happily promote bogus treatments for children with asthma or other serious conditions; when practitioners fail to obtain informed consent before commencing their treatments; when Prince Charles sells his “detox tincture” which is unable to eliminate poisons from your body, merely cash from your purse; when quacks inveigle desperate cancer patients by pretending they have found a cure; when pharmacists sell Bach Flower Remedies or other glorified placebos; when applied kinesiologists, iridologists, etc. claim that their baseless diagnostic tests are able to identify serious diseases; when pseudoscientists claim that certain alternative therapies are evidence-based because they managed to generate a false positive result purely by cherry-picking or massaging their data; when politicians who lack even the most basic understanding of science publicly support quackery, proclaiming that it is evidence-based.
And so on, and so on.
Some might criticize me here for claiming the moral high ground. But if I do so, it is for a good reason. Medical consultations are intrinsically unequal, with the clinician occupying a position of considerable power over often highly vulnerable patients. This places an important ethical onus on the caregiver to assist patients in making informed choices—an imperative and a trust that is breached each and every time that unproven nostrums born of ideology and wishful thinking are offered to people with assertions that they are an effective, valid approach to the treatment of disease.
When science is abused, hijacked or distorted in order to serve political or ideological belief systems, ethical standards will inevitably slip. The resulting pseudoscience is a deceit perpetrated on the weak and the vulnerable. We owe it to ourselves, and to those who come after us, to stand up for the truth, no matter how much trouble this might bring.
Today, I look back at the often stormy past from the peaceful vantage point of my retirement with a mixture of satisfaction and incredulity. The doctor and scientist may still be full of questions, but the musician in me breathes a sigh of relief that the performance, with all its impossible demands and fiendishly difficult passages, is finally over.
The FDA just made the following significant announcement:
The Food and Drug Administration (FDA) is announcing a public hearing to obtain information and comments from stakeholders about the current use of human drug and biological products labeled as homeopathic, as well as the Agency’s regulatory framework for such products. These products include prescription drugs and biological products labeled as homeopathic and over-the-counter (OTC) drugs labeled as homeopathic. FDA is seeking participants for the public hearing and written comments from all interested parties, including, but not limited to, consumers, patients, caregivers, health care professionals, patient groups, and industry. FDA is seeking input on a number of specific questions, but is interested in any other pertinent information participants would like to share.
April 20-21, 2015
9:00 am to 4:00 pm
FDA White Oak Campus
10903 New Hampshire Avenue
Bldg. 31, Room 1503A (Great Room)
Silver Spring, Maryland 20993
Attendance, Registration, and Oral Presentations
Registration is free and available on a first-come, first-served basis. If you wish to attend or make an oral presentation, please reference section III of the forthcoming Federal Register Notice (Attendance and/or Participation in the Public Hearing) for information on how to register and the deadline for registration.
If you cannot attend in person, information about how you can access a live Webcast will be located at Homeopathic Product Regulation
The agenda will be posted soon
And this is what Reuters reported about the planned event:
The hearing, scheduled for April 20-21, will discuss prescription drugs, biological products, and over-the-counter drugs labeled homeopathic, a market that has expanded to become a multimillion dollar industry in the United States. The agency is set to evaluate its regulatory framework for homeopathic products after a quarter century. (http://1.usa.gov/1Hxwup3) An Australian government study released this month concluded that homeopathy does not work. (http://bit.ly/1BheAmR) The FDA issued a warning earlier this month asking consumers not to rely on asthma products labeled homeopathic that are sold over the counter. (http://1.usa.gov/1EEuKrC) Homeopathic medicines include pellets placed under the tongue, tablets, liquids, ointments, sprays and creams. The basic principles of homeopathy, formulated by German physician Samuel Hahnemann in the late 18th century, are based on a theory that a disease can be treated using small doses of natural substances that in a healthy person would produce symptoms of the disease. The agenda for the hearing will be posted soon, the FDA said on Tuesday.
In my view, this is an important occasion for experts believing in evidence to make their position regarding homeopathy heard. I therefore encourage all my readers who have an evidence-based opinion on homeopathy to submit it to the hearing.
The other day, I received a request from THE GUARDIAN: could I write a piece on homeopathy in relation to the Australian report which had just come out; they gave me ~700 words and all of 3 hours to do it. I had an extremely busy day, but accepted the challenge nevertheless.
My article was published the next day and the ‘headliner’ at THE GUARDIAN had elected to call it There is no scientific case for homeopathy: the debate is over.
What followed was a flurry of debate – well over 2200 comments – which was more than a little ironic, considering the headline.
Essentially, my article had repeated the well-rehearsed arguments which have so often been made on this blog and elsewhere:
• Our trials failed to show that homeopathy is more than a placebo.
• Our reviews demonstrated that the most reliable of the 230 or so trials of homeopathy ever published are also not positive.
• Studies with animals confirmed the results obtained on humans.
• Surveys and case reports suggested that homeopathy can be dangerous.
• The claims made by homeopaths to cure conditions like cancer, asthma or even Ebola were bogus.
• The promotion of homeopathy is not ethical.
The comments that followed were mixed, of course; those that disagreed with me used a range of counter-arguments; in no specific order, these were the following:
- For several reasons, I cannot be trusted.
- I even once stated that I have treated my wife homeopathically.
- The Australian report was neither thorough nor reliable.
- The Australian expert panel were bought by Big Pharma.
- Homeopathic treatment must be individualised and can therefore not be tested in RCTs.
- Just because we don’t understand how homeopathy works, we should not conclude that it is ineffective.
- 200 years of positive experience with homeopathy clearly prove that it works.
- The huge popularity of homeopathy worldwide demonstrated its effectiveness.
- The fact that some very clever people support homeopathy shows that it works.
- Homeopathy works in animals and little children, therefore it cannot be just a placebo.
- The Queen and my aunt Doris use homeopathy.
- Placebos work.
- Patients must be able to choose; patient choice is an important principle in all health care.
- There’s more to evidence than just RCTs.
- Homeopathy works like vaccines.
With such an abundance of counter-arguments, the debate is clearly NOT over! Or is it? Let’s see how solid the arguments really are.
1) I cannot be trusted
Ad hominem attacks are no arguments at all; they are merely a sign that the person using them has no real arguments left.
2) I treated my wife homeopathically
This is true. At one stage in my life, I treated anyone who couldn’t run fast enough to escape me with homeopathy. What does that show? It simply shows that I can make mistakes too.
3) The Australian report was flawed
Perhaps it was not entirely faultless (no report ever is), but it certainly was rigorous – more so than any previous document in the entire history of homeopathy. If it excluded certain types of evidence, like the observational studies (which are so much loved by homeopaths), it did so because such data are wide open to bias.
4) The panel was not independent
Yes, it was! It even included a homeopath. The Australian National Health and Medical Research Council is internationally highly respected, and to defame it without evidence is, in a way, just another ad hominem attack.
5) Homeopathy must be individualised
This is a half-truth: classical homeopathy is mostly individualised, but lots of homeopathic prescribing is not individualised. And in any case, we have recently seen how totally unconvincing the results of strictly individualised trials of homeopathy are. This argument turns out to be a red herring.
6) We currently don’t understand how homeopathy works
What we do understand perfectly well, however, is the fact that no explanation exists which would not require throwing over board big chunks of the laws of nature. But even if we accepted that the mode of action is unknown, this would not change the lack of homeopathy’s clinical effectiveness. Lots of treatments work without us understanding how.
7) Experience shows it works
Experience is a very unreliable indicator of effectiveness; there are simply far too many confounders such as placebo effects, regression towards the mean or natural history of the disease. This is why we need evidence to be sure, and historically medicine finally started making progress when this lesson had been learnt.
8) The amazing popularity of homeopathy is proof of its effectiveness
This is the ‘argumentum ad populum’ fallacy. Think of the popularity of blood-letting to see how wrong this argument can be.
9) Homeopathy is backed by some very clever people
So what? Clever people are not always correct – look at me (just joking!)
10) Homeopathy works in animals and little children which proves that it is more than a placebo
First, animals and children do also show placebo-responses.
Second, the animal owner/parent might respond to placebo and thus mimic a placebo-response in the patient.
Third, the evidence for homeopathy is not positive neither in animals nor in children.
11) The Queen swears by homeopathy
Yes, so much so that, as soon as she is really ill, she makes use of what the very best of conventional medicine has to offer.
12) Placebos work
For sure! But that does not mean that we should prescribe placebos. If an effective treatment is given with compassion and empathy, the patient will also profit from a placebo effect – in addition to the effect of the treatment. Merely administering placebos means withholding the latter and is thus not in the best interest of the patient.
13) Patient choice
Yes, patient choice is important. However, it only applies to the choice between treatments that are demonstrably effective – if not choice becomes arbitrariness.
14) Evidence is more than just RCTs
True, there are many study designs other than RCTs. They all have their place in research – but when the research question is to test whether a treatment is effective beyond placebo, they are all open to different types of bias. The one that minimises bias best and thus produces more reliable findings than any other study design is the placebo-controlled, double-blind RCT.
15) Homeopathy works like vaccines
No! The ‘like cures like principle’ appears to be similar to the principles of vaccination, but this appearance is misleading. Vaccines contain small amounts of active material, while the typical homeopathic remedy doesn’t. Vaccines use the substance that causes the illness, e. g. (parts of) a virus, while homeopathy doesn’t.
So, is there still a debate? Obviously there is – the Guardian headliner was wrong – but it is a debate without reasonable arguments. And in the public domain, the debate is dominated by enthusiasts who endlessly repeat nonsensical notions which have been shown to be wrong over and over again.
In a nutshell:
Yes, there continues to be a debate.
No, there is no reasonable debate.
I have argued since many years that pharmacists should not be selling or promoting homeopathic and other remedies for which there is no proof of efficacy – the last time I published my view on this matter is even less than a week ago: Personally, I would go another step further and remind pharmacists who sell homeopathic remedies to the unsuspecting public that it is unethical to pretend they are more than placebos.
Despite my insistence and despite the fact that many agree with me (at least privately), there are precious few pharmacists who actually do something meaningful about the current situation. And there is very little visible change: in the UK, it is currently hard to find a pharmacy where homeopathic remedies are not on the shelves, and certainly all the major chains seem to put money before health care ethics.
I am, of course, speaking about the situation in the UK, France, Germany and some other European countries. Perhaps elsewhere things are different?
A NZ website seems to indicate that ‘down under’ the pharmacists are getting more active. Some strongly argue against unproven or disproven remedies in pharmacies:
Firstly, …it’s not a case that “pharmacists ‘should’ only be selling health products for which there is credible evidence of efficacy” (alterations mine, emboldened) but that they are obliged to—but choose not to. Their ethical guidelines state –
[PHARMACISTS] MUST:… Only purchase, supply or promote any medicine, complementary therapy, herbal remedy or other healthcare product where there is no reason to doubt its quality or safety and when there is credible evidence of efficacy.
…Secondly, the argument that ‘other businesses sell junk remedies therefore we shall’ is unsound. One of the key points about the ethical regulations for pharmacies is that customers should be able to walk into a store and have an expectation that the remedies within the store are basically sound. If other businesses elect to be unsound, that’s poor health practice, but no justification to do likewise. On the face of it, it would seem that the profit motive is ruling over sound and ethical practice.
Thirdly, that some GPs subscribe placebos should have no standing in this. There is some arguments for GPs to prescribe placebo remedies in some cases; others would argue that education is a better response in most cases. Either way—and just my opinion—it seems to me that GPs prescribing homeopathic remedies encourages people to think these have real remedial effects. I don’t work within the industry, but I am sure are ways of offering placebos that avoid using off-the-shelf commercial products. One might be that patients only get placebo ‘treatments’ via prescription.
…Fourthly, Pharmacy Today encourages that “pharmacies need to reconsider their stance in the light of this report”***. While this is an excellent idea, and one I thoroughly support, I suspect the underlying driver isn’t the report, but media presence on the topic. There is a long trail of evidence over many years showing that homeopathic remedies are not effective for anything.
The Australian study*** that prompted the latest round of interest drew this statement,
Based on the assessment of the evidence of effectiveness of homeopathy, NHMRC concludes that there are no health conditions for which there is reliable evidence that homeopathy is effective.
Homeopathy should not be used to treat health conditions that are chronic, serious, or could become serious. People who choose homeopathy may put their health at risk if they reject or delay treatments for which there is good evidence for safety and effectiveness. People who are considering whether to use homeopathy should first get advice from a registered health practitioner.* Those who use homeopathy should tell their health practitioner and should keep taking any prescribed treatments.
The National Health and Medical Research Council expects that the Australian public will be offered treatments and therapies based on the best available evidence.
…Why were the relevant professional bodies not onto this evidence sooner?…
I might add another one: why are the European professional bodies of pharmacy doing so little about this ongoing breach of their own ethical codes?
(*** the report that the author refers to is the one by the Australian National Health and Medical Research Council we discussed on this blog a few days ago.)