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Archive for March, 2009

Welcome another new blogger for SBM

I’d like to take this opportunity to announce the arrival of another new blogger for SBM. Please wecome Dr. John Snyder.

John Snyder, M.D., is Chief of the Section of General Pediatrics and Medical Director of Pediatric Ambulatory Care at Saint Vincent’s Hospital in New York City. He is also Assistant Professor of Pediatrics at New York Medical College. Since 1994 Dr. Snyder has been active in pediatric resident and medical student education with a particular interest in evidence based pediatrics. His main area of interest is medical myth and the ways in which parents utilize information in making medical decisions for their children. One area of focus has been vaccine myth, and he lectures frequently on this subject in both academic and community settings. Dr. Snyder graduated form Mount Sinai School of Medicine and completed his residency training in pediatrics at The Mount Sinai Hospital in New York City. He is board certified in Pediatrics, and is a Fellow of The American Academy of Pediatrics. He is the founding partner of Pediatric Associates of Saint Vincents, a mutli-specialty pediatric faculty practice in New York City.

I first encountered Dr. Snyder on the HealthFraud mailing list, where, along with our very own Harriet Hall, he’s done yeoman’s work in the discussions there. Given how much the antivaccine movement has figured into the topics discussed here, I’ve also been looking for a skeptical pediatrician for quite a while now, which is why I’m very glad we’ve landed Dr. Snyder, who will be posting approximately once or twice a month. His first contribution to SBM will be posted later this week.

Please welcome him and be sure to comment on his first post, which will likely appear by Wednesday afternoon.

Posted in: Announcements

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CAM on campus: Naturopathy

The latest event sponsored by “integrative medicine” proponents on my medical school campus featured the naturopath “Dr.” PB, a 2003 graduate and valedictorian from Bastyr University. Advertisements all over campus billed the lecture as “Stress, nutrition, and the GI tract,” which seemed innocuous enough. However, the lecture title as written on PB’s slide show was “Naturopathic apologetics for treating the gut.” He explained “treating the gut” to mean that for a wide variety of symptoms the naturopath’s diagnosis inevitibly focuses on the intestine and interventions nearly always involve dietary changes or supplements. Apparently some critics find this preoccupation to be excessive; hence “apologetics,” a word that connotes rational defense of articles of faith. This word choice was appropriate, as the lecturer wove snippets of basic physiology, but never any direct evidence, into a just-so story about how nearly all disease is caused by the modern lifestyle and can be ameliorate with dietary intervention.

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Posted in: Medical Academia, Science and Medicine

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Naturopathy and Liberal Politics: Strange Bedfellows

Yesterday’s post by Wally Sampson and an offline discussion with David Gorski have moved me to post something that I wrote in 2001. At the time, I was a member of the Massachusetts Special Commission on Complementary and Alternative Medical Practitioners. I’ve previously mentioned that experience here.

During that tenure I wrote a treatise on the tenets and practices of ‘naturopathic medicine,’* hoping to change the opinions of several others on the Commission (no such luck). In an early draft I included a section titled “The Political Philosophy of Naturopathy.” My ally on the panel, emeritus New England Journal of Medicine Editor Arnold “Bud” Relman, advised me to remove it, citing its tangential relevance and the possibility of it irritating rather than persuading. He was right, of course, but it now seems reasonable to hall it out of the mothballs. Here it is, with minor revisions and, I hope, a provocative postscript.

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Posted in: Faith Healing & Spirituality, Health Fraud, Politics and Regulation

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A View to the Past

The quackery political map has changed over the last three decades. I recently took a historial look over the landscape at characteristics and forms of quackery that could yield some perspective, and understanding.

Pseudoscience and quackery were identifiable long before we were here. Mesmer was deposed by Franklin and Lavoisier & Co.  Samuel Hahnemann’s homeopathy was recognized as false by contemporaries, and by 1840s Oliver W. Holmes, Sr. had a merry time deriding the entire theory. Despite the ability of good scientists to recognize medical nonsense, much of 19th century medicine practiced was by school of thought or philosophy – sectarian practice. Some of these were homeopathic, herbal, hydropathic (water, baths) osteopathic, medicinal, surgical, empiricist, eclectic and naturopathic. Much of this was indistinguishable from quackery.

In 1911, most institutions of sectarian and ideological approaches were demolished by the Flexner recommendations, resulting in reform of medical schools. Quackery became the separate ideas of individuals – Hoxsey, Ivy, Gerson, Binkley. Some schools like homeopathy and sects like osteopathy and chiropractic continued separate from medicine.

After WW II quackery began to be promoted by political activity. Sects and schools began to lobby for licensure, recognition, and later, insurance payments. In the 1970s-80s sectarianism/quackery became recognized by political groups as vehicles for their political causes. The movement started in right wing causes. Not conservative, but high emotion, radical, scofflaw behavior. People who had to leave the country to do their things. Laetrile became a political symbol for anti-regulation and far right politics. The John Birch Society, then more prominent and radical than it is today, was one of the main support orgs. Most supporters berated regulatory agencies. They bore bumper stickers, “Go to Health, FDA.“

Left met right over the Laetrile conflicts, as both extremes considered Laetrile to be effective and wanted it available. (Laetrile was a science and commercial fraud, its biochemistry and biology made up by its creator, E. Krebs.)

The rhetoric then was near-revolutionary, paranoid, anti-government and anti-regulatory. Laetrile popularity was a product of anti-regulatory rhetoric. Steve Barrtett, Victor Herbert and a few others worked as experts for government agencies and boards against the problem. At that time, the agencies were largely free of both industry and ideological pressures. We exchanged information, we testified in court. There was general agreement regarding what constituted knowledge, good practice and quackery. Most elected officials were on the side of regulation and law enforcement.
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Posted in: Health Fraud, Medical Academia, Politics and Regulation

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Placebo Therapies: Are They Ethical?

Is it ethical to overstate the efficacy of a treatment option, if it might lead to a patient’s enhanced experience of that treatment? Your response to this question may reveal the degree to which you favor Complementary and Alternative Medicine (CAM). Let me explain.

As far as I can tell, no CAM treatment has been proven effective beyond placebo. (If you’re not convinced of this, I suggest you take a look at Barker Bausell’s book on the subject.) That means that treatments like acupuncture, homeopathy, Reiki, energy healing, Traditional Chinese Medicine (such as cupping), and others (like “liver flushes”) perform about as well as placebos (inert alternatives) in head-to-head studies. Therefore, the effects of these treatments cannot be explained by inherent mechanisms of action, but rather the mind’s perception of their value. In essence, the majority of CAM treatments are likely to be placebo therapies, with different levels of associated ritual.

For the sake of argument, let’s assume that CAM therapies are in fact placebos – the question then becomes, is it ethical to prescribe placebos to patients?  It seems that many U.S. physicians believe that it is not appropriate to overstate potential therapeutic benefits to patients. In fact, the AMA strictly prohibits such a practice:

“Physicians may use [a] placebo for diagnosis or treatment only if the patient is informed of and agrees to its use.”

Moreover, a recent article in the New England Journal of Medicine concludes:

“Outside the setting of clinical trials, there is no justification for the use of placebos.”

However, there is some wavering on the absolute contraindication of placebos. A recent survey conducted by researchers at the Mayo Clinic asked physicians if it was permissible to give a dextrose tablet to a non-diabetic patient with fibromyalgia if that tablet was shown to be superior to no treatment in a clinical trial. In this case 62% of respondents said that it would be acceptable to give the pill.

The authors note:

“Before 1960, administration of inert substances to promote placebo effects or to satisfy patients’ expectations of receiving a prescribed treatment was commonplace in medical practice. With the development of effective pharmaceutical interventions and the increased emphasis on informed consent, the use of placebo treatments in clinical care has been widely criticized. Prescribing a placebo, it is claimed, involves deception and therefore violates patients’ autonomy and informed consent. Advocates of placebo treatments argue that promoting the placebo effect might be one of the most effective treatments available for many chronic conditions and can be accomplished without deception.”

How do you feel about placebos? Are they a legitimate option in some cases, or a violation of patient autonomy and informed consent?
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Posted in: General, Medical Ethics, Science and Medicine

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Acupuncture – Disconnected from Reality

The primary goal of science-based medicine (SBM) is to connect the practice of medicine to the best currently available science. This is similar to evidence-based medicine (EBM), although we quibble about the relative roles of evidence vs prior plausibility. In a recent survey 86% of Americans said they thought that science education was “absolutely essential” or “very important” to the healthcare system. So there seems to be general agreement that science is a good way to determine which treatments are safe and work and which ones are not safe or don’t work.

The need for SBM also stems from an understanding of human frailty – there are a host of psychological effects and intellectual pitfalls that tend to lead us to wrong conclusions.  Even the smartest and best-meaning among us can be lead astray by the failure to recognize a subtle error in logic or perception. In fact, coming to a reliable conclusion is hard work, and is always a work in progress.

There are also huge pressures at work that value things other than just the most effective healthcare. Industry, for example, is often motivated by profit. Institutions and health care providers may be motivated by the desire for prestige in addition to profits. Insurance companies are motivated by cost savings. Everyone is motivated by a desire to have the best health possible – we all want treatments that work safely, often more so than the desire to be logical or consistent. And often personal or institutional ideology comes into play – we want health care to validate our belief systems.

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Posted in: Acupuncture, Science and Medicine

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Shame on PBS!

I used to have a high opinion of PBS. They ran excellent programs like Nova and Masterpiece Theatre and I felt I could count on finding good programming when I tuned into my local PBS channel. No more.

It was bad enough when they started featuring Deepak Chopra, self-help programs, and “create your own reality” New Age philosophy, but at least it was obvious what those programs were about. What is really frightening is that now they are running programs for fringe medical claims and they are allowing viewers to believe that they are hearing cutting edge science.

Neurologist Robert Burton has written excellent articles for salon.com pointing out the questionable science presented by doctors Daniel Amen and Mark Hyman in their PBS programs. Please click on the links and read what he wrote. These programs are being shown during fundraising drives as if they were examples of the best PBS has to offer. (more…)

Posted in: Science and the Media

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How not to think

Thankfully, I don’t receive all that much blog-related mail.  But this weekend I received several communications about a piece in popular liberal blog.  The piece is (ostensibly) about Lyme disease, which coincidentally happens to be one of the topics of my first post here at SBM.  In fact, I’ve written about Lyme disease a number of times, and Dr. Novella has a very good summary of the controversy at one of his other blogs.  Since we’ve discussed this so many times, I won’t be reviewing the entire controversy, but looking at this particular blog post to examine how our personal experiences and errors in reasoning can distort our view of reality.

The topic of Lyme disease has come up recently in the press, and as the weather improves, cases in the northeastern U.S. should start to increase soon.  Just as a reminder, so-called “chronic” Lyme disease is not Lyme disease at all.  Lyme disease can have early and late manifestations, none of which correspond to the vague, protean symptoms labeled as “chronic” by some.  The disease is often diagnosed without resort to objective evidence, such as reliable, positive lab tests.  But let’s look at the blog post in question and see what’s there.

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Posted in: Science and Medicine

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When fraud undermines science-based medicine

The overriding them, the raison d’être if you will, of this blog is science-based medicine. However, it goes beyond that in that we here at SBM believe that science- and evidence-based medicine is the best medicine. It’s more than the best medicine, though; it’s the best strategy for medicine to improve therapy for our patients. We frequently contrast science-based medicine with various forms of “complementary and alternative medicine,” specifically pointing out that SBM changes its practices as new science and new evidence mandates it while CAM tends to rely on ancient, vitalistic, pre-scientific or pre-modern scientific beliefs about how disease occurs as the basis for its therapies. Although it may be painfully slow and frustrating at times and even though there may be major stumbles along the way, the overall course of SBM over the last century has in general been to produce ever more effective therapies and to discard therapies that are either ineffective or whose risk-benefit ratios are insufficiently favorable. The one single most important thing behind the advancement of medicine is good science.

That’s why I really, really hate scientific fraud, and I’m really, really upset, perhaps even more so than Dr. Atwood, over the discovery last week of what is arguably one of the most massive scientific frauds in medical history. It doesn’t matter that Dr. Atwood is an anaesthesiologist and I am not, meaning that the specific scientific fraud unearthed, which was perpetrated by an anesthesiologist studying multimodal anesthesia, as reported in Anesthesiology News, the Wall Street Journal, and the New York Times. I am a surgeon, and the relief of surgical pain in my patients is an important part of my practice. If the scientific basis of what my colleagues in anesthesiology do before, during, and after my operations is called into doubt, I have to wonder if I am giving my patients the best surgical care. Aside from that, there is the intellectual outrage I feel as a result of seeing science and patients betrayed in such a systematic and blatant manner.
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Posted in: Clinical Trials, Health Fraud, Pharmaceuticals, Science and Medicine, Surgical Procedures

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I Work with Steve Martin

Partly as an antidote to the previous, depressing post, and partly because it is so deserving of exposure, I now present—verbatim except for names and other ‘identifiers’—a recent email exchange between one of my colleagues and a correspondent. It has nothing to do with SBM. My colleague, known to his friends as T-Bone, is the reluctant owner of a vacation house in Florida. He must rent it as much as possible, since no one is willing to buy it. He gets frequent queries from potential renters, but usually not of the sort illustrated below. T-Bone is a very funny person. This exchange reminds me of the pieces that Steve Martin did for the back page of the New Yorker a few years ago.

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From: Carlos Buffett <epoosin@shizchengin.com>

To: T-Bone Seidler

Sent: Friday, January 23, 2009 11:12 AM

Subject: HouseHere inquiry about LandSilence 2468 from Carlos Buff 

Dear T-Bone Seidler,

Carlos Buff has sent the following inquiry about property number 2468 in LandSilence. To reply to this inquiry, simply call the phone number contained in the inquiry or reply to this e-mail.

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Posted in: Humor

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