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Archive for Neuroscience/Mental Health

Bleaching away what ails you

I’ve been at this blogging thing for over seven years, over four of which I’ve been honored to be a part of this particular group blog dedicated to promoting science as a basis for rational medical therapies. For three or four years before that seven year period began, I had honed my chops on Usenet in a group known as misc.health.alternative (m.h.a.). So, although I haven’t been at this as long as Steve Novella, I’ve been at it plenty long, which led me to think I had seen just about everything when it comes to pseudoscience and quackery.

As usual whenever I think I’ve seen it all, I was wrong.

I’m referring to something that has been mentioned once before on this blog, namely something called “Miracle Mineral Solution” (MMS). I must admit that after a brief reaction of “WTF?” I basically forgot about it. I shouldn’t have; I should have looked into it in more detail at the time. Fortunately, being a blogger means never having to say you’re sorry (at least about not having caught a form of quackery the first time it made big news), and fortunately MMS was brought to my attention in the context of an area of quackery that I frequently blog about. You’ll see what I mean in a minute.

What happened is that MMS was brought to my attention again by a couple of readers and, not remembering it other than vaguely, I did what I always do when confronted with these situations. I Googled, and I found what I needed to know. Basically, MMS is 28% sodium chlorite in distilled water. In essence, MMS is equivalent to industrial strength bleach. Proponents recommend diluting MMS in either water or a food acid, such as lemon juice, which results in the formation of chlorine dioxide.
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Posted in: Health Fraud, Neuroscience/Mental Health, Vaccines

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Hypnotherapy For Pain and Other Conditions

Hypnotherapy is the use of hypnosis as a medical intervention, usually for the treatment of pain and other subjective symptoms. It remains controversial, primarily because the evidence for its efficacy is not yet compelling, but also because it is poorly understood. This situation is not helped by the fact that it is often characterized as an “alternative” therapy, a label that can “ghettoize” an otherwise legitimate treatment modality.

What Is Hypnosis?

Any meaningful discussion of hypnosis, or any other phenomenon, needs to start with a specific, and hopefully operational, definition.  If we cannot define hypnosis then it becomes impossible to meaningfully discuss it. The problem of definition plagues the science dealing with many so-called alternative therapies, such as acupuncture.  Good science requires controlling for specific variables, so that we can determine which variables are having what effects. If we don’t know which variables are part of the operational definition of a specific therapy, then we cannot conduct proper studies or interpret their results.

For example, with acupuncture, in my opinion the only meaningful definition of this procedure is the placing of thin needles into specific acupuncture points in order to elicit a specific response. Research has shown, however, that acupuncture points do not exist, that placing needles at specific points is not associated with a specific outcome, and even that sticking needles through the skin (as opposed to just poking the skin superficially) does not correlate with outcome. When these variables are isolated they do not appear to contribute anything to efficacy, therefore one might conclude that acupuncture does not work. Research into acupuncture, however, often does not adequately isolate these variables from the therapeutic ritual that surrounds acupuncture, or even mixes in other modalities, such as electrical stimulation.

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Posted in: Neuroscience/Mental Health

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Autism prevalence: Now estimated to be one in 88, and the antivaccine movement goes wild

Editor’s Note: Some of you might have seen this before, but it’s an important (and timely) enough topic that I figure it’s worth exposing to a different audience. It’s been updated and edited to style for SBM. Enjoy.

If there’s one thing that I’ve learned that I can always—and I do mean always—rely on from the antivaccine movement, it’s that its members will always be all over any new study regarding vaccines and/or autism in an effort to preemptively put their pseudoscientific spin on the results. It’s much the same way that they frequently storm into discussion threads after stories and posts about vaccines and autism like the proverbial flying monkeys, dropping their antivaccine poo hither and yon all over science-based discussions.

In any case, antivaxers are also known for not respecting embargoes. They infiltrate their way into mailing lists for journalists in which newsworthy new studies are released to the press before they actually see print and then flood their propaganda websites with their spin on the studies, either attacking the ones they don’t like or trying to imprint their interpretation on ones on which they can, all before the skeptical blogosophere—or even the mainstream press—has a chance to report. So it was late last week, when vaccine-autism cranks jumped the embargo on a CDC study that announced new autism prevalence numbers. This is nothing new; it’s the antivaccine movement’s modus operandi, which makes me wonder why the various journals don’t shut off the flow. The study, of course, was announced in press conferences and a number of news stories. No doubt by now many of you have seen them. The stories I’ve seen thus far have focused on the key finding of the CDC study, which is that the prevalence of autism in the U.S. has risen to approximately 1 in 88, a finding reported in the CDC’s Morbidity and Mortality Weekly Report.

This is how the CDC came up with the new prevalence:
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Posted in: Neuroscience/Mental Health, Public Health, Science and the Media, Vaccines

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Pyroluria and Orthomolecular Psychiatry

I have previously written about psychomotor patterning – an alleged treatment for developmental delay that was developed in the 1960s. The idea has its roots in the notion of ontogeny recapitulates phylogeny, that as we develop we progress through evolutionary stages. This idea, now largely discredited, was extended to the hypothesis that in children who are developmentally delayed their neurological development could be enhanced if they were made to progress through evolutionary stages. Children were put through hours a day of passive crawling, for example, with the belief that this coax the brain into a normal developmental pathway. The treatment was studied extensively in the 1970s showing that the treatment did not work.

However, those who developed this treatment, Doman and Delecato, did not want to give up on their claim to fame simply because it didn’t work and the underlying concepts were flawed. For the last 40 years they have continued to offer the Doman-Delecato treatment for all forms of mental retardation, surviving on the fringe, all but forgotten by mainstream medicine (except by those with an interest in pathological science).

I was recently asked to look into the claims for a disorder known as pyroluria, and what I found was very similar to the history of psychomotor patterning. There was some legitimate scientific interest in this alleged condition in the 1960s. Studies in the 1970s, however, discredited the hypothesis and it was discarded as a failed hypothesis. The published literature entirely dries up by the mid 1970s. But the originators of the idea did not give up, and continue to promote the idea of pyroluria to this day.

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Posted in: Neuroscience/Mental Health

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Social Anxiety – There’s An App for That?

When I first heard about studies using smartphones to treat anxiety with cognitive therapy I was intrigued, to say the least. However, I had a misconception about what that actually meant. My assumption was that the smartphone app would be automating some basic cognitive therapy, a virtual therapist that could give some reflective feedback and also give basic cognitive tools to deal with anxiety. That sounded like it might be useful, at least for mild cases, and I hoped that the app was designed to refer severe cases to an actual therapist.

I had already been very interested in the concept of online, virtual, or computer-based therapy. It seems like this is coming, but of course it needs to be researched to see how it works and for which patients.

But that is not what the smartphone app is at all. Rather it has to do with a treatment technique called cognitive bias modification (CBM). This therapy is based on research that finds that those with social anxiety have a cognitive bias which makes them attend more than others to signs of threat or to negative emotions. Further, they have a cognitive bias to interpret ambiguous social cues as hostile or negative. This raises a cause and effect question – are they anxious because they have these cognitive biases, or does the anxiety make them attend to negative emotions and interpret emotions negatively. Perhaps it is both, in a reinforcing feedback loop.

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Posted in: Neuroscience/Mental Health, Science and Medicine

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Mass Media Attention Psychogenic Syndrome – MMAPS

By now you have probably heard of the middle and high school children in LeRoy, NY who have come down with what some reports are calling a “mystery” illness. Of course it is almost obligatory to note in such stories that doctors or experts are “baffled.” There are several features of this story that are interesting from a science-based medicine and also just a critical thinking point of view – the media response, how such ailments are diagnosed, the publicity around a private medical condition, and the speculation from many camps that appears ideologically motivated.

To first review the facts of the case, there are now 15 children affected with involuntary tics, which are sudden “jerk-like” motor movements. They all attend the same junior-senior high school and so range in age from 12-18, with onset of symptoms from October to January of the current school year.  All but one of them are girls. All of the children have been examined by pediatric neurologists, 12 of the 15 at the Dent neurological institute by the same two neurologists, including Dr. Lazlo Mechtler.

Dr. Mechtler, and in fact all of the pediatric neurologists who have examined any of the children, have come to the same diagnosis: conversion disorder and mass psychogenic illness. A conversion disorder occurs when psychological stress manifests as physical symptoms. We take this for granted to some degree – when people feel anxious they may get sweaty, nauseated, short of breath, and have palpitations. People with panic attacks can have these symptoms and also difficulty swallowing, and episodes that may resemble certain types of seizures with feelings of being separate from reality or from themselves. These are physical symptoms resulting from pure emotional stress. But in some cases psychological stress can also lead to neurological symptoms – pretty much any neurological symptoms, such as weakness, difficulty speaking, loss of vision, and involuntary movements.

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Posted in: Epidemiology, Neuroscience/Mental Health

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Blind-Spot Mapping, Cortical Function, and Chiropractic Manipulation

Steven Novella recently wrote about so-called “chiropractic neurology” and its most outspoken proponent, Ted Carrick.  In 2005 I published an article in The Scientific Review of Alternative Medicine (Vol 9, No 1, p. 11-15) entitled “Blind-Spot Mapping, Cortical Function, and Chiropractic Manipulation.” It was an analysis of a study Carrick had published.

Carrick read a shorter, popularized version of my critique in Skeptical Inquirer and responded with a diatribe that was inaccurate, distorted what I had said, and accused me of fraud, deception, and mis-representation.  He failed to offer a credible rebuttal of my specific criticisms; and, in my opinion, showed that he failed to understand some of my points. He referred to me as “Ms. Hall” and suggested that I was psychotic. He characterized my e-mail correspondence with him as “bizarre, rude, and offensive.” It was none of those, and I have copies of the e-mails to prove it. Carrick says he “forwarded it to the legal council for the American Chiropractic Association for review.”  Now that strikes me as bizarre.

I am re-publishing the entire text of my article here as an instructive example of what passes for science in the chiropractic neurology community. Readers can judge for themselves whether my critique amounts to fraud and whether I am showing signs of psychosis, whether Carrick is a good scientist and whether his reply to my critique was appropriate. (more…)

Posted in: Chiropractic, Diagnostic tests & procedures, Neuroscience/Mental Health, Ophthalmology

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Chiropractic Neurology

Chiropractic is a diverse collection of beliefs and practices occurring under a broad regulatory label. The differences among various chiropractics are so stark that it is difficult to make general statements about chiropractic practice. At one end of the spectrum, however, are so-called “straight” chiropractors who adhere to the original philosophy of D.D. Palmer – that a vital force they call innate intelligence is response for health, and blockages in the flow of this magical force through the nerves are what cause illness. Such chiropractors believe they can influence non-neuromuscular conditions by restoring the flow of innate blocked by mysterious “subluxations” in the spine.

From chiropractors.org we have this definition of “straight” chiropractors:

Because straight chiropractors believe that nearly all diseases are caused by issues with the spine, they don’t believe they need any diagnostic tools. Traditional testing done by medical doctors and hospitals is not even considered by a straight chiropractor as being necessary. Diagnosis is done by finding the subluxations in the spine so that those can be corrected.

This particular version of chiropractic (by some estimates about a third of chiropractors follow this philosophy) is pure pseudoscience. It is, as indicated by the quote above, hostile to science-based medicine.  After a century of such belief there isn’t a bit of evidence to support the notion of innate intelligence, chiropractic subluxations, or health benefits from this approach.

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Posted in: Chiropractic, Neuroscience/Mental Health

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Premature Claims for Neurotrophic Factors

Scientific medicine is not easy. By this point we have largely picked the low hanging fruit, and continued improvements are mostly incremental and hard won. In order to get the most out of our limited research dollars, and optimize medical practice with the safest and most effective treatments, we need to use all available scientific evidence in the proper way. That is the essence of SBM.

There are those, however, that misuse or abuse the scientific evidence — whether to promote an ideology, out of innocent ignorance, or for nefarious purposes. In order to be truly science-based a medical intervention should be plausible, or at least not implausible, based upon basic science evidence, and it should actually be safe and effective when tested in people. Therefore, medical practices can fail to be scientific for one of two broad reasons: they can be scientifically implausible, or they can lack proper clinical evidence for safety and efficacy (or even have evidence for lack of efficacy). Some modalities (like homeopathy) fail on both counts.

The more pernicious medical claims are those that seem highly plausible, that can be extrapolated from basic science, but simply lack adequate clinical evidence. Stem cell clinics are an example — they can easily dazzle desperate patients with scientific descriptions of how stem cells work, and even cite published basic-science papers showing the potential of this technology. But what they cannot do is provide clinical evidence that the specific intervention they are offering is safe and effective for the specific disease or condition they are treating.

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Posted in: Herbs & Supplements, Neuroscience/Mental Health, Science and Medicine

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Steven Fowkes (Part 2 of 2): Nutrients for Better Mental Performance

Last week, in part 1, I covered Steven Fowkes’ “cures” for Alzheimer’s and herpes. In part 2, I will cover a video where he goes further afield. It is titled “Nutrients for Better Mental Performance,” but he also discusses sleep, depression, hangovers, and a lot of other topics.

Some of what he says are simple truisms: mental performance is affected by everything related to health such as sleep, food, vitamins, minerals, detoxification, nutrients, amino acids, hormone replacement, pharmaceuticals and herbs. Metabolism is the key to brain function: 3% of the body uses 20% of the energy. Macronutrients, micronutrients, exercise, water, and breathing are important too.

We knew that.

Which nutrients promote optimal brain function? All of them: any deficiency will affect the brain. Fowkes goes beyond the evidence to claim that some nutrients are needed at super-physiological levels; Mother Nature is not optimal. Some supplements appear to work but the effects are not sustainable. It’s not about parts, but about how things work together. (more…)

Posted in: Neuroscience/Mental Health, Nutrition

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