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An Industry of Worthless Acupuncture Studies

Electro-AcupunctureEven more interesting to me than the question of whether or not acupuncture is effective for any particular symptom is the meta-question of how acupuncture proponents have managed to promote a treatment with systematically terrible scientific data. A new study provides a fresh example of this, which I will discuss below.

I think the behavior of acupuncturists reflects the fact that there are subcultures within science, where each community has its own standards, culture, and typical practices. You see this reflected in how they conduct their research and support their claims. Chiropractors, for example, have what is in my opinion a very unscientific culture. Their treatments are not science-based; science is an afterthought cherry-picked to support what is ultimately their philosophy.

The culture of acupuncture

The world of acupuncture has its own culture as well. Within this world there are special, very permissive rules of science that allow acupuncture to work for almost anything. One trend is to look for anything that happens locally in the skin when you stick a needle into it and then declare that a “mechanism for acupuncture.” The rules of the acupuncture culture also allow for a shifting definition of what acupuncture actually is, allowing the definition to conform to whatever the evidence shows. It’s a neat and subtle trick that allows acupuncture proponents to completely subvert the purpose of science.

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Posted in: Acupuncture

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Don’t just stand there, do nothing! The difference between science-based medicine and quackery

Tree of Life - the first-known sketch by Charles Darwin of an evolutionary tree describing the relationships among groups of organisms (Cambridge University Library).

Tree of Life – the first-known sketch by Charles Darwin of an evolutionary tree describing the relationships among groups of organisms (Cambridge University Library).

The Merriam-Webster Dictionary defines science as:

Knowledge about or study of the natural world based on facts learned through experiments and observation.

And:

Knowledge as distinguished from ignorance or misunderstanding.

While this should distinguish science from pseudoscience, those who practice the latter often lay claim to the same definition. But one of the major differences between science and pseudoscience is that science advances through constant rejection and revision of prior models and hypotheses as new evidence is produced; it evolves. This is the antithesis of pseudoscience. At the heart of pseudoscience-based medicine (PBM) is dogma and belief. It clings to its preconceptions and never changes in order to improve. It thrives on the intransigence of its belief system, and rejects threats to its dogma. Despite the constant claims by peddlers of pseudoscience that SBM practitioners are closed-minded, we know that, in fact, PBM is the ultimate in closed-minded belief. Of course, those of us who claim to practice SBM aren’t always quick to adopt new evidence. We sometimes continue practices that may once have been the standard of care but are no longer supported by the best available evidence, or perhaps may even be contradicted by the latest evidence. Often this is a byproduct of habituated practice and a failure to keep current with the literature. While this is certainly a failure of modern medicine, it is not an inevitable outcome. It is not emblematic of the practice of medicine, as it is with PBM. When medicine is science-based, it strives for continual improvement based on modifications around emerging evidence. (more…)

Posted in: Critical Thinking, Medical Ethics, Public Health, Science and Medicine

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Separating Fact from Fiction: The “Magic” of Epigenetics?

Watch as I pull a rabbit out of my hat using the power of epigenetics!

Watch as I pull a rabbit out of my hat using the power of epigenetics!

Every few years, it seems, a new concept emerges as the favorite go-to means of marketing unproven and highly implausible approaches to health care. Explanations of the proposed healing properties of homeopathic remedies incorporating quantum mechanics immediately comes to mind as an example of this phenomenon. Or how proponents of the most absurd treatments will just add “Nano” to anything and claim scientific miracles of healing.

From the Nano SRT website:

Q: What Is Stress Reduction Therapy?
A: SRT is a remarkable new procedure that combines the disciplines of Acupuncture, Biofeedback and Homeopathy with Laser Light technology. A computerized scan or test is done to see what your body is sensitive to, and how it is out of balance, then help it learn not to be.

Q: What does the Nano SRT do?

A: Substance specific frequencies converted to a digital format, and presented in the form of sound and light, are what allow for patient assessment and therapy down to the molecular level. The frequencies are what make it possible to assess thousands of substance sensitivities in mere minutes, then allow the brain and nervous system to record a new association that is positive or neutral instead of the inappropriate ones that were previously stored in memory. This breaks the link between the stimulus and response, makes symptoms unnecessary, creates balance and harmony, from dis-ease and disharmony, and allows the body to function better.

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Posted in: Science and Medicine

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Deconstructing “200 Evidence Based Reasons NOT To Vaccinate”

"Evidence-based"? You keep using that term. I do not think it means what you think it means.

“Evidence-based”? You keep using that term. I do not think it means what you think it means.

So I was checking out my Facebook page when I stumbled across an article, entitled “200 Evidence Based Reasons NOT To Vaccinate” [PDF download] posted by a physician friend. He and I often post medically related articles for a laugh, and every so often, we stumble across something like this, and share it with those whom we know will laugh at the incorrect pile of garbage it truly is. But, of course, I am prejudicing you in advance.

Let us first look at where this article is found. It comes from a website called GreenMedInfo, complete with the tagline of Education Equals Empowerment. While I don’t disagree with that tagline per se, I will also add the caveat that the education needs to be soundly based in reality. It contains such articles with catchy titles like, “What if HPV does not cause Cervical Cancer?,” “Research Confirms Sweating Detoxifies Dangerous Metals, Petrochemicals,” and “The Toxic Terrain of Airplanes: 4 Steps To Travelling Clean.” It is a veritable cornucopia of medical woo, and you too can access it to your hearts content. The founder of the site, Sayer Ji, has been discussed before on this site, regarding Angelina Jolie’s prophylactic mastectomy and the links between diet and cancer, with even broader discussion by a “friend” of the blog. He “founded Greenmedinfo.com in 2008 in order to provide the world an open access, evidence-based resource supporting natural and integrative modalities.”
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Posted in: Vaccines

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Integrative medicine, naturopathy, and David Katz’s “more fluid concept of evidence”

The Integrative Medicine Wheel

The Integrative Medicine Wheel

Dr. David Katz is undoubtedly a heavy hitter in the brave new world of “integrative medicine,” a specialty that seeks to “integrate” pseudoscience with science, nonsense, with sense, and quackery with real medicine. In fairness, that’s not the way physicians like Dr. Katz see it. Rather, they see it as “integrating” the “best of both worlds” to the benefit of patients. However, as we’ve documented extensively here, on our personal blogs, and even in the biomedical literature (plug, plug), what “integrative” medicine means in practice is indeed what I characterized, the infiltration of woo into medicine. This infiltration seems to have started mainly in academia—hence the term “quackademic medicine” and “quackademia”—with the steady infiltration of nonsense into medical schools and academic medical centers, but has since metastasized to the world of community hospitals. This “integration” (or, as I like to refer to it, “infiltration”) has become so pronounced that a few years ago The Atlantic published an article entitled “The Triumph of New Age Medicine“, and just last December the Journal of the National Cancer Institute (JNCI) published a monograph full of articles touting “integrative oncology,” including guidelines recommended by the Society of Integrative Oncology (SIO) for the “integrative” treatment of breast cancer symptoms.

I mention Dr. Katz for two reasons. First, he’s taken another broadside at us at Science-Based Medicine in blog entry at The Huffington Postwhere else?—entitled “Holism, Holes and Poles” that I’ve been meaning to address for a while. But before I address Dr. Katz’s most recent complaint against science-based medicine (SBM), it’s necessary to step back and look at some history.
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Posted in: Clinical Trials, Homeopathy, Medical Academia, Naturopathy

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On the “right” to challenge a medical or scientific consensus

Jenny McCarthy flaunting her "expertise" at the antivaccine "Green Our Vaccines" rally in Washington, DC in 2008

Jenny McCarthy flaunting her “expertise” at the antivaccine “Green Our Vaccines” rally in Washington, DC in 2008

The major theme of the Science-Based Medicine blog is that the application of good science to medicine is the best way to maintain and improve the quality of patient care. Consequently, we spend considerable time dissecting medical treatments based on pseudoscience, bad science, and no science, and trying to prevent their contaminating existing medicine with unscientific claims and treatments. Often these claims and treatments are represented as “challenging” the scientific consensus and end up being presented in the media—or, sadly, sometimes even in the scientific literature—as valid alternatives to existing medicine. Think homeopathy. Think antivaccine views. Think various alternative cancer treatments. When such pseudoscientific medicine is criticized, frequently the reaction from its proponents is to attack “consensus science.” Indeed, I’ve argued that one red flag identifying a crank or a quack is a hostility towards the very concept of a scientific consensus.

Indeed, I even cited as an example of this attitude a Tweet by Jane Orient, MD, executive director of the American Association of Physicians and Surgeons (AAPS). This is an organization of physicians that values “mavericky-ness” above all else, in the process rejecting the scientific consensus that vaccines are safe and effective and do not cause autism or sudden infant death syndrome (SIDS), that HIV causes AIDS, and that abortion doesn’t cause breast cancer, to name a few. Along the way the AAPS embraces some seriously wacky far right wing viewpoints such as that Medicare is unconstitutional and that doctors should not be bound by evidence-based practice guidelines because they are an affront to the primacy of the doctor-patient relationship and—or so it seems to me—the “freedom” of a doctor to do pretty much damned well anything he pleases to treat a patient.
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Posted in: Critical Thinking, Science and the Media, Vaccines

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The Food Babe’s war on “chemicals” heats up again

The Food Babe

[Note: This is an extra bonus post. Because The Food Babe has been in the news and I couldn’t wait until today, I discussed it at a certain not-so-super-secret blog. If you’ve read it before, it’s only somewhat modified and updated. If you haven’t, it’s new to you. Either way, feel free to comment. Completely new material by me will appear here in a scant few hours.]

It’s been a while since I’ve taken notice of Vani Hari, a.k.a. The Food Babe, the misguided “food safety” activist who sees chemicals, chemicals, chemicals everywhere and raises fears about them all, especially the ones that she can’t pronounce. The first time I took any significant notice of her was about a year ago, when she was making news for lobbying Subway to remove the “yoga mat chemical” azodicarbonamide from its bread, although I didn’t write about her here for a few months after that. As I explained at the time, azodicarbonamide is a chemical used in small amounts to mature bread dough, improve its handling properties, and produce a drier, more cohesive, and more pliable dough that holds together better during kneading by hand or machine. It is safe, breaks down during baking into small amounts of safe substances, and is only a hazard if you inhale it in powder form, where it can be a pulmonary irritant. Then, she made some astonishingly ignorant statements about beer, where she pulled the same routine, to the point where I labeled her tactics as the “appeal to yuckiness.” Basically, if something sounds yucky to her (such as isinglass, which is derived from the swim bladders of fish and is used in some beers to remove haziness and yeast byproducts), then it must be bad, either for you or just bad because it’s gross. It also turns out that The Food Babe makes quite a pretty penny spreading her ignorance and has become sought after to feature in various media appearances, such as magazine covers.

For the last few months I’ve been somewhat dreading February, because I knew Hari was poised to release her first book. As I described before, she has more than a fair amount of social media savvy and business acumen, which have allowed her to build the Food Babe brand rapidly and explains (to me at least) why she seemed to come out of nowhere on a trajectory to become as influential as Dr. Mehmet Oz. Her book, released this week, is called The Food Babe Way: Break Free from the Hidden Toxins in Your Food and Lose Weight, Look Years Younger, and Get Healthy in Just 21 Days! (Talk about ridiculously long subtitles!) You see, I knew that when it came time for Hari’s book to come out we’d be seeing a lot more of her, and unfortunately that’s what happened. As part of that publicity, Hari was featured in a fairly long feature article in The Atlantic by James Hamblin, The Food Babe: Enemy of Chemicals. It’s a relatively amusing title, to be sure, and there’s a lot that’s good about the article. Unfortunately, there’s also a lot that’s downright infuriating about it as well, the more so given that Hamblin is a physician and really should know better, but unfortunately in this piece he shows himself far more respectful of pseudoscience of the sort promoted by The Food Babe than a physician should be.
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Posted in: Nutrition, Science and the Media

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Ebola outbreaks: Science versus fear mongering and quackery

Ebola virus particles.jpg
Ebola virus particles” by Thomas W. Geisbert, Boston University School of Medicine – PLoS Pathogens, November 2008 doi:10.1371/journal.ppat.1000225. Licensed under CC BY 2.5 via Wikimedia Commons.

Without a doubt the big medical story of the last week or so has been the ongoing outbreak of Ebola virus disease in West Africa, the most deadly in history thus far. Indeed, as of this writing, according to a table of known Ebola outbreaks since 1976 at Wikipedia, in Guinea, Sierra Leone, and Liberia, the three nations affected thus far, there have been 1,440 cases and 826 deaths. Worse, the World Health Organization (WHO) is reporting that it is spreading faster in Africa than efforts to control it. In particular, late last week it was announced that two Americans who had been infected with Ebola were going to be flown back to the US, specifically to Emory University, for treatment, a development that ramped up the fear and misinformation about Ebola virus to even greater heights than it had already attained, which, unfortunately, were already pretty high. Indeed, the ever-reliably-histrionic Mike Adams of NaturalNews.com wrote a typically hysterical article “Infected Ebola patient being flown to Atlanta: Are health authorities risking a U.S. outbreak?” On Saturday, we learned that Dr. Kent Brantly, an aide worker for Samaritan’s Purse, a Christian charity run by Franklin Graham, son of the well-known preacher, Billy Graham, who had been evacuated from Liberia aboard a private air ambulance, had arrived in Georgia.

This latest development inspired medical “experts,” such as Donald Trump, to stoke fear based on the arrival of two infected Americans in the US. For instance, last Friday, after it was first announced that the Ebola-infected Americans would be flown back to the US, Trump tweeted:

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Posted in: Epidemiology, Health Fraud, Homeopathy, Public Health, Vaccines

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Of the Trial to Assess Chelation Therapy, Bayes, the NIH, and Human Studies Ethics

An experiment is ethical or not at its inception; it does not become ethical post hoc—ends do not justify means.
~ Henry K. Beecher

tact

A couple of weeks ago, Dr. Josephine Briggs, the Director of the National Center for Complementary and Alternative Medicine (NCCAM), posted a short essay on the NCCAM Research Blog touting the results of the Trial to Assess Chelation Therapy (TACT) (italics added):

The authors found that those receiving the active treatment clearly fared better than those receiving placebo. The accompanying editorial in the AHJ reminds readers about the value of equipoise and the need to “test our beliefs against evidence.”

Most physicians did not expect benefit from chelation treatment for cardiovascular disease. I readily admit, initially, I also did not expect we would find evidence that these treatments reduce heart attack, strokes, or death. So, the evidence of benefit coming from analyses of the TACT trial has been a surprise to many of us. The subgroup analyses are suggesting sizable benefit for diabetic patients—and also, importantly, no benefit for the non-diabetic patient. Clearly subgroup analyses, even if prespecified, do not give us the final answer. But it is also clear that more research is needed to test these important findings.

And TACT findings are indeed a reminder of the importance of retaining equipoise [sic], seeking further research aimed at replicating the findings, and neither accepting nor rejecting findings based on personal biases. The scientific process is designed to weed out our preconceived notions and replace them with evidence.

Dr. Briggs concluded:

So, TACT is a reminder—an open mind is at the center of the scientific method.

Dr. Briggs’s title was “Bayes’ Rule and Being Ready To Change Our Minds”, a reference to a recent editorial that had accompanied one of the TACT papers. That editorial, by Dr. Sanjay Kaul, a physician and statistician from UCLA, begins with this quotation:

Preconceived notions are the locks on the door to wisdom.
~ Merry Browne

Here is the relevant passage from Dr. Kaul’s editorial (italics added):

Sixth, it has been argued that the trial was unethical because there was no compelling clinical or preclinical evidence that chelation therapy has significant efficacy against atherosclerotic cardiovascular disease, and given that chelation therapy can cause harm, the risk was not minimal. A Bayesian analysis would not look kindly on the results because of the low prior probability of treatment effect (the so-called implausibility argument).6 This is an uncharitable (and unwarranted) interpretation of the data because previous systematic reviews concluded, “insufficient evidence to decide on the effectiveness or ineffectiveness of chelation therapy in improving clinical outcomes among people with atherosclerotic cardiovascular disease.” It is axiomatic that absence of evidence of efficacy is not the same as evidence of the absence of efficacy.

From a Bayesian perspective, the strength of evidence is often summarized using a Bayes factor, which is a measure of how well 2 competing hypotheses (the null and the alternate) predict the data. The Bayes factor and the corresponding strength of evidence for the primary end point result in TACT overall, and diabetic cohorts are shown in Table 1. The p-value of 0.035 for TACT overall cohort translates into a Bayes factor of 0.108, which means the evidence supports the null hypothesis ≈1/9th as strongly as it does the alternative. This reduces the null probability from 50% pretrial (justified by suspension of one’s belief in treatment effect) to 10% post-trial. Although this does not represent strong evidence against the null, it does reduce the level of skepticism surrounding chelation therapy. In the diabetic cohort, the nominal p-value of 0.0002 translates into a Bayes factor of 0.002 (1/500), which reduces the extremely skeptical prior null probability of 95% to 4% post- trial, indicating very strong evidence against the null.

In concluding, Dr. Kaul states:

Finally, TACT highlights the double standard when it comes to accepting inconvenient results not aligned with our preconceived notions on so-called dubious quack cures such as chelation…

Closed minds?

Dr. Kaul’s reference “6” above is to a lengthy article that we published in 2008 titled “Why the NIH Trial to Assess Chelation Therapy Should Be Abandoned”. So, it seems, both Drs. Briggs and Kaul were chastising us for our biased, preconceived beliefs about so-called dubious quack cures. Our minds were, apparently, not open. Let’s examine this contention. (more…)

Posted in: Clinical Trials, Health Fraud, Medical Academia, Medical Ethics, Politics and Regulation

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Measles gets a helping hand

In a recent post I shared a bit of my personal, near-death experience with measles during the US epidemic of 1989-1991. As I describe in that post, I contracted a very serious measles infection at the end of medical school, and was highly infectious when I interviewed for a residency position at Seattle Children’s Hospital. Like others my age who received an ineffective, killed measles vaccine between 1963 and 1967, I had not been adequately protected. The MMR vaccine was not yet available, and no boosters were recommended at the time. Unfortunately, though my measles titers (a test of immunity to measles) were checked when I entered medical school, the school’s student health department failed to notice or respond to the results – I was not immune and did not receive a booster dose at that time, as I should have. That mistake was huge, and could have cost me my life. It also caused me to potentially sicken many vulnerable children during my tour of the hospital, as well as others I may have inadvertently exposed during the window of communicability as I walked the streets of Seattle. The Department of Health had to be called to trace all of my steps and attempt to track down and protect any potential contacts.
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Posted in: Epidemiology, Medical Ethics, Politics and Regulation, Public Health, Science and Medicine, Vaccines

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