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Acupuncture for Hot Flashes

ResearchBlogging.orgIn the most recent issue of The Journal of clinical Oncology is a study comparing acupuncture to Effexor in the treatment of vasomotor symptoms (hot flashes) in women with breast cancer who cannot take hormone replacement therapy. The study found that the two treatments are equivalent, with longer duration and fewer side effects from acupuncture. However, the study is designed as a pilot study (very preliminary) and therefore the conclusions are highly unreliable – given prior research, this raises the question as to why the study was performed at all.

The study included only 50 women, which is a small number for a clinical trial and alone means this is at best a preliminary study. There were 25 women randomized to one of two arms – either acupuncture or Effexor (which is standard treatment for vasomotor symptoms in women with breast cancer). However, the two arms were not blinded in any way, and there was no acupuncture control group – no sham or placebo acupuncture.

It is unclear why the researchers undertook a small unblinded study such as this, given that previous studies were better designed.

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The life cycle of translational research

ResearchBlogging.orgI’m a translational researcher. To those of you who aren’t familiar with what that means, it means (I hope) that I study potential therapies in the lab and try to translate them into actual therapies that will cure patients of breast cancer — or, at the very least, improve their odds of survival or prolong survival when cure is not possible. Translational research is extremely important; indeed, it is the life blood of science-based medicine, with basic science producing the discoveries and clinical research the applications of these discoveries. When it works, it’s the way that science leads medicine to advance. However, sometimes I think that it’s a bit oversold. For one thing, it’s not easy, and it’s not always obvious what basic science findings can be translated into useful therapies, be it for cancer (my specialty) or any other disease. For another thing, it takes a long time. The problem is that the hype about how much we as a nation invest in translational research all too often leads to a not unreasonable expectation that there will be a rapid return on that investment. Such an expectation is often not realized, at least not as fast and frequently as we would like, and the reason has little to do with the quality of the science being funded. It has arguably more to do with how long it takes for a basic science observation to follow the long and winding road to producing a viable therapy. But how long is that long and winding road?

A lot longer than many, even many scientists, realize. At least, that’s the case if a paper from about a year ago by John Ioannidis in Science is any indication. The article appeared in the Policy Forum in the September 5 issue and is entitled Life Cycle of Translational Research for Medical Interventions. As you may recall, Dr. Ioannidis made a name for himself a couple of years ago by publishing a pair of articles provocatively entitled Contradicted and Initially Stronger Effects in Highly Cited Clinical Research and Why Most Published Research Findings Are False, which Steve Novella blogged about a couple of years ago.

Dr. Ioannidis lays it out right in the first paragraph:
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Posted in: Clinical Trials, Science and Medicine

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Causation and Hill’s Criteria

Causation is not so simple to determine as one would think. A mantra at SBM is ‘association is not causation’ and much of the belief in the efficacy of a variety of quack nostrums occurs because improvement occurs after use of a nostrum, therefore improvement occurs because of use of a nostrum. It is why vaccines as a cause of autism are so compelling to some. Vaccines are given at the same time autism starts to manifest. It would require more intellectual power than I have not to conclude, wrongly, that vaccines caused the autism. Concluding causation from sequential events is how the human mind works, and reality, as we know and ignore, constantly conspires to fool us into making false causal connections. In Infectious Diseases I see the error almost daily. The patient had a fever, patient was given antibiotics, fever went away. Therefore the antibiotics treated an infection. Well, maybe, maybe not. One of my mantras is ‘antibiotics are not antipyretics’ and you must be very careful before concluding that the fever went away because of the penacephalone. (more…)

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Oppose “Big Floss”; practice alternative dentistry

We survived almost all of human history without it. Yet in the last 100 years people have allowed themselves to be hoodwinked by a huge corporate conspiracy into believing that we “need” their products. They cite studies and claim we don’t understand science; they ignore ancient folk wisdom and have no respect for our intuition. They peddle their products without regard to the dramatic increase in chronic diseases and weakened immune systems of recent decades. I’m speaking, of course, of “Big Floss.”

It’s time to take our mouths back from corporate domination. It’s time for alternative dentistry.
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Posted in: Humor, Science and Medicine

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The “pharma shill” gambit

Editor’s note: Since I happen to be on vacation (sort of–in reality I plan on spending most of next week holed up in my Sanctum Sanctorum at home writing a grant that’s due in February) and because readership tends to be down during the week between Christmas and New Years’ Day, I thought I’d resurrect something from well over three years ago and revise it to fit this particular blog. In doing so, I hope to provide you with something amusing to read, as well as something to link to time and time again whenever you want to refer to a particular gambit beloved by promoters of quackery and pseudoscience. I present here….The “Pharma Shill” Gambit! Enjoy!

I’ve mentioned before on this blog at least once that I cut my skeptical teeth, so to speak, on Usenet, that vast untamed and largely unmoderated territory full of tens of thousands of discussion newsgroups which used to be a lot more active before the rise of the World Wide Web and then later blogs. These days, few ISPs even offer much in the way of Usenet access; it’s become pretty much irrelevant since Google archived Usenet in the form of Google Groups. My forays into skepticism started out with combatting Holocaust denial on a newsgroup known as alt.revisionism (as good an excuse as any to remind you that nearly all Holocaust “revisionism” isn’t historical revisionism but is actually denial) and then branched out into more general skepticism, particularly about the claims of creationists and, of course, promoters of “alternative” medicine, the latter of which ultimately led me to being the editor of this wild and woolly thing we call the Science-Based Medicine blog. After I began to participate in the debates in the main newsgroup where alternative medicine is discussed, misc.health.alternative, it didn’t take me long to encounter a favorite tactic of promoters of alt-med who were not happy with one who insists on evidence-based medicine and who therefore questions claims that are obviously not based in valid science: The “Pharma Shill” Gambit. This is a technique of ad hominem attack in which a defender of “alternative” medicine, offended by your questioning of, for instance, his/her favorite herb, colon or liver flush technique, zapper, or cancer “cure,” tries to “poison the well” by implying or outright stating you must be in the pay of a pharmaceutical company, hired for nefarious purposes.

Since I entered the blogosphere several years ago under another guise, I’ve only occasionally checked back at my old stomping ground, mainly because blogging is so much less constraining than posting to Usenet, where mostly I used to respond to the posts of others, rather than writing about what I wanted to write about. A while back, though, out of curiosity I checked back and found this interesting little tidbit from a poster calling himself PeterB that demonstrated such a perfect example of the “pharma shill” gambit that I thought it might serve as a perfect example of the sort of thing I’ve had to put up with ever since I started speaking out against quackery:
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Posted in: Humor, Science and Medicine, Science and the Media, Vaccines

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Buteyko Breathing Technique – Nothing to Hyperventilate About

A reader recently sent in a link to a New York Times article that discussed an alternative breathing technique developed in Russia for the treatment of asthma called the Buteyko Method, or the Buteyko Breathing Technique (BBT), and asked for an evaluation of the claims on SBM.  This post will attempt to be a reasonably comprehensive evaluation of Buteyko and his therapy so that subsequent discussions, should they be necessary, may be more terse.

The NYT article is primarily an anecdote of a friend of the author who suffered from severe asthma, but who had improved since he began using the BBT.  The author briefly discusses asthma, the history and theory behind Buteyko and hyperventilation before wrapping up with an attempt to provide evidence to support the legitimacy of the story.  The friend’s pulmonologist is quoted to confirm that “based on objective data, his breathing has improved…”  She cites controlled clinical trials “in Australia and elsewhere” where patients have reduced their use of medications, including a purported British study of 384 patients where patients had a 90% reduction in rescue inhaler use and 50% reduction in steroids.  She ends by pointing out that the British Thoracic Society has given BBT a “B” rating, and an admonition to “the pharmaceutically supported American medical community to explore this nondrug technique.”

Never having heard of BBT before, the NYT article left me with several questions.  Who was Buteyko?  How did he develop the BBT?  What is BBT, what does it claim to do, and how does it claim to work?  Is the evidence as presented in the NYT article accurate? And finally, what evidence exists within the literature that BBT is an effective treatment for asthma?

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Posted in: Science and Medicine

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2009′s Top 5 Threats To Science In Medicine

As 2009 comes to an end, it seems that everyone is creating year-in-review lists. I thought I’d jump on the list band wagon and offer my purely subjective top 5 threats to rational thought in healthcare and medicine.

Of course, it strikes me as rather ironic that we’re having this discussion – who knew that medicine could be divorced from science in the first place? I thought the two went hand-in-hand, like a nice antigen and its receptor… and yet, here we are, on the verge of tremendous technological breakthroughs (thanks to advances in our understanding of molecular genetics, immunology, and biochemistry, etc.), faced with a growing number of people who prefer to resort to placebo-based remedies (such as heavy-metal laced herbs or vigorously shaken water) and Christian Science Prayer.

And so, without further ado, here’s my list of the top 5 threats to science in medicine for 2009 and beyond:
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Posted in: General, Politics and Regulation, Science and Medicine, Science and the Media

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“Toxins”: the new evil humours

They say that everything old is new again and that is certainly true in the world of “alternative” health. One of the axiomatic premises of contemporary “alternative” health puts its believers behind the times … by approximately 500 years.

A fundamental premise held by believers in “alternative” health is that we are swimming in a world of “toxins” and those “toxins” are causing disease. Like most premises in “alternative” health it has no basis in scientific fact; makes intuitive sense only if you are ignorant of medicine, science and statistics; and speaks to primitive fears and impulses.

The preoccupation with “toxins” is a direct lineal descendant of the obsession with evil humours and miasmas as causes of disease. It is hardly surprising that prior to the invention of the microscope the real causes of disease went undiscovered. The idea that disease is caused by tiny organisms that invade the body is not amenable to discovery in the absence of scientific instruments and scientific reasoning. And it goes without saying that the same people who were unaware that bacteria and viruses cause disease could not possibly imagine chromosomal defects, inborn errors of metabolism or genetic predispositions to disease.

Instead, people imagined that diseases were caused by excess evil humours, substances that were named, but never seen or identified in any way accessible to the senses. It was recognized that some diseases were contagious, and in that case, people invoked the idea of “miasmas” that somehow transmitted disease.
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Posted in: Science and Medicine

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Multiple Sclerosis and Irrational Exuberance

Multiple sclerosis (MS) is fascinating illness that can range from mild annoyance to debilitating nightmare. The frightening nature and unclear cause of the disease makes it a magnet for questionable medical therapies (i.e. quackery). A piece published last week in (surprise!) the Huffington Post helps fuel the fires of suspicion and paranoia while failing to shed any light on the future of MS research.

Multiple sclerosis is a disease of the nervous system. Its victims develop symptoms based on what part of the nervous system is affected. For example, if MS attacks the optic nerve, a patient may experience blurry vision or blindness. If it affects the motor areas of the brain that controls the left leg, the patient will develop weakness in the left leg. Typically, the symptoms will last a certain period of time and then improve, but often not completely back to normal. (more…)

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Measles

It looks like the H1N1 pandemic is fading fast. I am amazed at how lucky we were, at least in the hospitals where I work. A month ago all the ICU beds were full, most of the ventilators were in use and we were wondering how we were going to triage the next batch of patients who needed advanced life support and we had none to offer. Then, right as we reached maximum capacity and had no more wiggle room, the rates plummeted. We skated right up to the edge of the precipice, looked down, and did not have to jump.

The pandemic has not been as bad as expected, but it was still no walk in the park. Nationwide H1N1 killed maybe 10,000, with 1,100 in children and 7,500 among young adults (ref). Oregon has had 1200 hospitalizations and 68 deaths. We had about 8 deaths from H1N1 in my hospital system. We would have had twice that number, but one of our hospitals is a trauma center and offers ECMO (Extra Corporeal Membrane Oxygenation) and we managed to save a number of people who would have died if they had been in a lesser hospital. The national statistics mirror our experience. None of the deaths were in the elderly. Pity the vaccine was slow to be produced as it could have prevented the majority of those deaths.

Are we done with H1N1? Will it become part of seasonal flu? Will it have a third comeback, fueled by holiday travel? Will it mutate and increase virulence? Will it recombine with avian flu to generate a new strain? Is this THE pandemic that comes every 30 years or so, and we will not see another until after I am long dead?

How am I supposed to know? I can’t see the future. Or can I? Mr. Randi, listen up: I am thinking I will be eligible for that million dollar prize. I am receiving future information from the Large Hadron Collider, curiously delivered inside a baguette. I think I can predict the next infection to sweep the US.

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Posted in: Science and Medicine, Vaccines

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