Medicine
What Happens When You KNOW You're Taking a Placebo?
One of the rare studies into the action of the placebo effect in 'non-blind' clinical trials was undertaken by Lee C. Park and Uno Covi at the Johns Hopkins University School of Medicine in 1964. 'Non-blind' means that patients were informed that the pills they were issued were totally inert, that they were placebos, and in this case they were also assured that despite this the pills would be of benefit to them. The study concluded:
'The primary finding is that patients can be willing to take placebo and can improve despite disclosure of the inert content of the pills; belief in pill as drug was not a requirement for improvement.'
(Some first-hand reports on our Testimonials page.)
Ref. L. C. Park, U. Covi, Nonblind Placebo Trial - An Exploration of Neurotic Patients' Responses to Placebo When Its Inert Content Is Disclosed, Archives of General Psychiatry, April 1965, Vol. 12, pp. 336-345
Giving placebos could help patients?
According to this article from the 'OnMedica' medical website, doctors are being encouraged to consider the "meta-placebo" effect: 'the healing belief that even fake/placebo treatments have positive effects . . . if both the doctor and the patient believe in the healing powers of the fake treatment, it does not matter that both know the treatment is fake'. No need to wait for medical tests to verify this hypothesis. A growing number have already experienced this effect using our Universal Placebos. See our Testimonials page.
Tuesday, 5 August 2008
Doctors could steer patients away from unproven alternative therapies if they could use dummy pills, suggests Dutch research.
Oskar van Deventer, a researcher from Leidschendam in the Netherlandspoints out that it is a well established medical fact that fake treatments do work.
If this is the case, he argues, doctors could include placebo pills in their medical armamentarium. But then the doctor might have to lie to the patient and this would present an ethical dilemma.
"On the one hand, the doctor does not want to lie to his patient. On the other hand, the effect of the fake treatment would diminish if the patient knows it is fake. For this reason, fake treatments are typically left to practitioners of so-called alternative medicine who are often not even aware of the ethical dilemma," he writes in the journal Medical Hypotheses.
However he believes this is not the case as telling the truth about the dummy treatment would not stop it from being effective. This type of treatment is called the ‘meta-placebo’ effect.
"This is based on the healing belief that even fake/placebo treatments have positive effects. That is, if both the doctor and the patient believe in the healing powers of the fake treatment, it does not matter that both know the treatment is fake," he says.
If such an effect does exist, it would solve a few complexities for today’s medics. They would not have to lie to patients when prescribing them placebos and by having such treatments at their disposal they could continue to regularly monitor patients’ symptoms whilst on the "treatment". The doctor could also help to prevent people from using alternative medicine, which can be both expensive and risky to health.
The hypothesis that the "meta-placebo" effect exists needs to be tested before such treatments can become evidence-based medicine.
Using the equivalent to the gold standard of the double blind trial would create a challenge for such research as would the dilemma over which condition to test it on, he says, but he calls on readers to help meet those challenges in testing the effect.
The article follows figures published by the Prescription Pricing Authority last month that show a fall in the prescribing of homeopathic remedies by GPs from 83,000 in 2005 to 49,300 in 2007.
However separately, a pilot study from five NHS homeopathic hospitals found 60% of the 1797 patients treated with homeopathic remedies reported an improvement in quality of life.
The top four most treated conditions were eczema, chronic fatigue syndrome, menopause and osteoarthritis. Amongst those four, the proportion of patients that reported an improvement in quality of life after six visits to the homeopath varied from 59.3% for chronic fatigue syndrome and 73.3% for menopause. Overall, 30 common conditions were being treated by homeopaths.
Medical Hypotheses 2008; 71: 335–9; Homeopathy 2008; 97: 114-121
Obecalp Controversy
What a difference a mention in the NY Times makes! There's been an incredible amount of web traffic generated by a website advertising 'Obecalp' ('placebo backwards), including a very lively debate at one of our favourite sites, Boingboing
In the Boingboing exchanges, most people are objecting to (a) enculturating kids into pill-popping behaviours, and (b) deceiving kids about the actual nature of the pill. Nobody's gainsaying the operation of the so-called placebo effect, it seems to be more about the parenting issues ...
I guess the same objections would be raised to behaviour like putting a Flintstones-themed band-aid on a bumped knee that didn't actually need a band-aid, with the assurance that this would 'make it better'...?
Two things, in defence of the placebo-as-pill approach (and astute readers will be aware that the placebo effect can also be engaged through sham injections, sham surgery ... and possibly Mystical Words Uttered Backwards Under a Full Moon and so forth ...
As conscious purveyors of placebos, we're concerned with the potential of the placebo effect to inspire self-healing. We don't recommend that people lie about or misrepresent our product: it's a sugar pill, inert, side-effect free ... BUT the placebo effect exists, and there is some evidence to show that people ingesting a placebo *in the awareness that it's a placebo* may still gain some benefit. That's the 'honesty in parenting' bit.
As to the pill-popping-culture bit, well ... perhaps. One of our team is a homeopath, and consequently aware of the materialist critique that homeopathic remedies are also nothing else but placebos. In general, our feeling is 'so what? If there's no deception and misrepresentation, and the things actually work, what's the harm?'
We understand the passion and the aggro, to an extent. Nobody likes the idea of ripping people off and leveraging the pain of children. But we can assure you there's a case to be made for harmless and light-hearted exploration of the placebo effect, and especially for the questions it raises about the same pill-popping culture that encourages conventional practitioners to regularly use ineffective treatments (such as prescribing antibiotics for viral infections).
The closest we've come to a branded placebo, up till now (apart from Obecalp and our product), is CEBOCAP, available through Walgreens in three strengths (!) "by prescription only" (!!)
It seems that Cebocap is manufactured by Forest Pharmaceuticals but we can't find any reference to them on the Forest site. Cebocap is also listed at Canadacure, but that site notes that it's "Only Available By Prescription ... and Not available in Canada".
The Size of the Global Pharmaceutical Industry
In 2005, global pharmaceutical sales totalled US$602 billion with growth of 7% from the previous year.
At an average annual growth rate of 14% between 1994 and 2003, pharmaceuticals top the OECD manufacturing trade growth stats, ahead of coke, refined petroleum products and nuclear fuel (8%), medical, precision and optical equipment (7.5%), aircraft and spacecraft (7.4%), and motor vehicles, trailers and semi-trailers (7.3%).
In 2006 the 10 largest pharmaceuticals firms accounted for 46 per cent of global sales.
Ref. Medicines Australia
Placebos and Antidepressants
Want to know where we get the 'up to 70% success' claim in our packaging?
"The placebo response, noted as an early or nonpersistent improvement in response to an inactive agent, represents one of the most significant challenges in central nervous system (CNS) drug development. Despite a wealth of documentation, there is no commonly accepted definition of this phenomenon. However, it is agreed that there has been a significant increase in the placebo response in the last 20 years, particularly in clinical trials with antidepressant medications for major depressive disorder (MDD).
Estimates as high as 70% have been reported for CNS clinical trials. (our italics) Such large placebo rates have a significant impact on the cost and speed of drug development.
Since fewer than half of the depressed patients who receive active medications in psychiatric trials show clinically significant improvement, some critics claim that antidepressants are no better than placebo treatment, and their illusory superiority depends on poorly designed studies and biased clinical evaluations. In a set of six identically designed, three-arm, parallel controlled trials submitted to the Food and Drug Administration for an antidepressant drug, Leber reported that antidepressants could not be distinguished from placebo in five of the six studies."
Ref. Richard Entsuah, Phil Vinall: Potential Predictors of Placebo Response: Lessons From a Large Database, Drug Information Journal. Ambler: 2007. Vol. 41, Iss. 3; pg. 315, 16 pgs
Is your Doctor Prescribing a Placebo?
"Academic Physicians Use Placebos in Clinical Practice and Believe in the Mind–Body Connection" - Rachel Sherman and John Hickner (University of Chicago Pritzker School of Medicine), Journal of General Internal Medicine, Volume 23, Number 1 / January, 2008
Abstract
Background - The placebo and the placebo effect are often investigated in the context of clinical trials. Little data exist on the use of placebos in the course of routine health care.
Objective - The aim of this study is to describe a group of academic physicians’ use of placebos and their knowledge, attitudes, and beliefs about placebos and the placebo effect.
Design - A 16-question anonymous web-based survey of physicians from Internal Medicine departments of 3 Chicago-area medical schools was used.
Results - There were 231/466 (50%) physicians who responded; of these, 45% reported they had used a placebo in clinical practice. The most common reasons for placebo use were to calm the patient and as supplemental treatment. Physicians did not widely agree on the definition of a placebo and had a variety of explanations for its mechanism of action. Ninety-six percent of the respondents believed that placebos can have therapeutic effects, and up to 40% of the physicians reported that placebos could benefit patients physiologically for certain health problems. Only 12% of the respondents said that placebo use in routine medical care should be categorically prohibited. Regarding “placebo-like” treatment, 48% of respondents reported giving at least 1 type of treatment in a situation where there was no evidence of clinical efficacy.
Conclusion - Nearly half of the respondents use placebos in clinical practice and most believe in the mind–body connection. The results of this study, based on retrospective self-reported behavior, are subject to recall bias and may not be representative of American physicians.
Placebo Surgery
Amazing placebo experiment with knee surgery - points to the finding that there can be 'grades' in the placebo effect - big pills are more effective than small pills, coloured pills more effective than white ones, inert injections more effective than pills, and sham surgery more effective than any of them.
Of course, at Universal Placebos we feel it sufficient to stay with our modest, aesthetically pleasing, small white sugar pills, in doses of three. That's enough.
The Placebo Effect and Depression
Placebo Effect Accounts for Fifty Percent of Improvement in Depressed Patients Taking Antidepressants (1996 Press Release, American Psychological Association)
TORONTO -- The debate about treating depression with drugs, psychotherapy, or a combination of both drugs and psychotherapy has raged on over the years. But a recent analysis of 39 studies of 3,252 depressed patients, presented at the American Psychological Association's (APA) 104th annual convention, found that 50 percent of the drug effect is due to the placebo response.
In other words, a patient taking antidepressant medication with a self-reported improvement rate of 10 points, can attribute half (.5) of that improvement to the placebo effect.
To determine the placebo effect of antidepressant medications, psychologist Guy Sapirstein, Ph.D., at the University of Connecticut, analyzed 39 studies of depressed patients from 1974 to 1995. The studies included patients with a primary diagnosis of depression, were randomized, and controlled for patients who received no treatment.
Studies that measured the effects of antidepressant medications such as fluoxetine (Prozac), sertaline (Zoloft) and paroxetine (Paxil) were included in the analysis.
Dr. Sapirstein concluded that the pharmacologic and nonpharmacologic effects of antidepressants indicates that while only 27 percent of the response to medication is due to the medication alone (a true pharmacologic effect), 50 percent is due to the psychological impact of administering the medication (placebo effect) and 23 percent is due to other 'nonspecific factors.' 'People benefitting from drugs are benefitting because they think that taking the antidepressant medicine is working,'
Dr. Sapirstein said. 'If we take these results and say that improvement is due to what the patients think, then how people think and its effect on how they feel are more powerful than the chemical substance,' he added.
In addition, the study found that patients who either took medication or underwent psychotherapy exclusively had similar treatment outcomes. The promise of future treatment, which was controlled for by the wait-listed patients, did not affect depression levels.


