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Medical marijuana as the new herbalism, part 4: Cannabis for autism

Medical marijuana as the new herbalism, part 4: Cannabis for autism

When I first started writing about the claims made for medical marijuana and the cannabis oil derived from it, it didn’t take long for me to characterize medical claims for cannabis as the “new herbalism,” as opposed to pharmacognosy, the branch of pharmacology devoted to the study of natural products. The reason is simple. Although I support legalization of marijuana for recreational use, when I look at how medical marijuana has been promoted as a “foot-in-the-door” prelude to legalization, I see testimonials and flimsy evidence ruling over all. I see all the hallmarks of alternative medicine herbalism and none of the hallmarks of pharmacology. Here’s what I mean. Pharmacognosy examines an herb, plant, or other natural product and seeks to identify the chemicals within it that have pharmacological activity against a condition or a disease, the better to purify and isolate those chemicals and turn them into drugs. Herbalism, on the other hand, emphasizes the use of whole plants or extracts from plants, rather than the isolation of the most active compounds. Thus, herbal remedies often contain hundreds, or even thousands, of different compounds, of which only one or a few are active. Even extracts, such as cannabis oil, contain many compounds.

In contrast to pharmacognosy, herbalists make the claim that whole herbs and plant components possess a synergy that is missing from the purified active constituents and/or that the mixture is safer than the pure components because one compound can reduce the side effects of another without reducing therapeutic efficacy. When looked at closely neither claim stands up to scrutiny. Synergism between plant constituents is rare and very difficult to demonstrate, for example. In essence, herbalism turns back the clock 200 years to a time before scientists had developed the techniques and abilities to isolate active ingredients with pharmaceutical activity. Moreover, herbalism, in contrast to pharmacognosy, emphasizes anecdotes over scientific evidence.

Indeed, in my previous posts in this series on medical marijuana, one theme has emerged, which is that cannabis—specifically, a class of active chemicals in marijuana known as cannabinoids—has potential for some diseases but is not the panacea claimed by its proponents. It does not cure cancer, for instance, contrary to glowing testimonials promoted by people like Rick Simpson. For other conditions, the evidence is either not particularly compelling or only mildly promising.

So I reacted with considerable dismay on Friday night when I saw this news report on the 11 o’clock news, “Michigan panel recommends allowing marijuana for autism“:

Posted in: Herbs & Supplements, Politics and Regulation

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Bastions of quackademic medicine: Georgetown University

The cover of Georgetown Medicine Spring/Summer 2015 issue. This image will drive Mark Crislip crazy, as it features yet another acupuncturist not using gloves while sticking needles into people. Dr. Gorski loves watching Dr. Crislip's reactions to such photos.

The cover of Georgetown Medicine Spring/Summer 2015 issue. This image will drive Mark Crislip crazy, as it features yet another acupuncturist not using gloves while sticking needles into people. Dr. Gorski loves watching Dr. Crislip’s reactions to such photos.

We frequently discuss a disturbing phenomenon known as quackademic medicine. Basically, quackademic medicine is a phenomenon that has taken hold over the last two decades in medical academia in which once ostensibly science-based medical schools and academic medical centers embrace quackery. This embrace was once called “complementary and alternative medicine” (CAM) but among quackademics the preferred term is now “integrative medicine.” Of course, when looked at objectively, integrative medicine is far more a brand than a specialty. Specifically, it’s a combination of rebranding some science-based modalities, such as nutrition and exercise, as somehow being “alternative” or “integrative” with the integration of outright quackery, such as reiki and “energy healing,” acupuncture, and naturopathy, into conventional medicine. As my good bud and fellow Science-Based Medicine (SBM) blogger Mark Crislip put it, mixing cow pie with apple pie does not make the cow pie better, but we seem to be “integrating” the cow pie of quackery with the apple pie of science-based medicine thinking that somehow it will improve the smell, taste, and texture of the cow pie.

I remember how, when I first discovered how prevalent outright pseudoscience and quackery had become in medical academia (which was before I became one of the founding SBM bloggers), I was in denial. I couldn’t believe it. Then I tracked this phenomenon with something I called the Academic Woo Aggregator. It turned out to be a hopeless endeavor because, as I soon discovered, the phenomenon was so pervasive that it was really hard to keep the Aggregator up to date. Since then, I’ve generally only focused on particularly egregious examples, naming names when institutions like my alma mater embrace anthroposophic medicine; “respectable” journals publish “integrative medicine” guidelines for breast cancer patients; cancer organizations include “integrative oncology” in their professional meetings; NCI-designated comprehensive cancer centers promote reiki to pediatric cancer patients or offer high dose unproven vitamin C treatment to patients; or respected academic institutions embrace traditional Chinese medicine (TCM) and the quackery that is function medicine. You get the idea. It’s depressing just how far medical academia has fallen in terms of being “open-minded” to the point of brains falling out when it comes to medical pseudoscience.

Posted in: Acupuncture, Basic Science, Energy Medicine, Homeopathy, Medical Academia

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Should physicians and managed care organizations offer homeopathy?

Homeopathy is water

Anyone who reads Science-Based Medicine on even a semi-regular basis will know our collective opinion of homeopathy. Basically, at its core, homeopathy is pure quackery.

I don’t care if it’s repetitive to say this yet again because it can’t be emphasized enough times that homeopathy is The One Quackery To Rule Them All. OK, there are others that compete for that title, such as reiki and other magical “energy therapies” like therapeutic touch, both of which, unfortunately, can be found in many academic medical centers where the faculty really should know better. Any “medicine” whose very precepts break multiple laws of physics and chemistry, laws that would have to be proven not just wrong but spectacularly wrong for homeopathy to work, deserves only ridicule.

The “laws” of homeopathy

Think of it this way. There are two “laws” of homeopathy, neither of which has any basis in reality. First, there is the law that states “like cures like” and asserts that, to relieve a symptom, you need to use a substance that causes that same symptom in healthy adults. There is, of course, no evidence that this is a general principle of medicine. For instance, we don’t generally treat fever by administering something that causes fever or treat vomiting with something that causes vomiting. The second law, however, is the one that’s completely ridiculous. Basically, it’s the law of infinitesimals. This law states that a homeopathic remedy is made stronger with dilution, specifically serial dilutions with vigorous shaking between each dilution step to “potentize” the remedy. That’s ridiculous enough, but homeopaths, never satisfied with the merely ridiculous have to turn the ridiculous up to 11 and beyond by using this principle to assert that dilutions far beyond the point where there is likely even to be a single molecule of the original remedy left are effective and become more so with more dilution. For instance, a 30C dilution is 30 one hundred-fold dilutions (C=100, get it?), or a 1060 dilution. Avogadro’s number is only on the order of 6 x 1023, or more than 1036-fold less than the dilution. The simple mathematics of homeopathy just doesn’t work, although this doesn’t stop homeopaths from coming up with some truly spectacular flights of pseudoscience (like the “memory of water”) to try to “explain” how it can work.

Posted in: Homeopathy

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GcMAF and the life and death of an autism quack


[Editor’s note: This is an extra bonus post that has appeared elsewhere. This week’s post will appear in several hours.]

A mysterious apparent suicide and conspiracy theories

Three weeks ago, those of us who combat the antivaccine movement noted the then-very recent death of an autism quack and antivaccinationist (but I repeat myself) who’s been big in the “autism biomed” movement for a long time and was a regular fixture at autism quackfests like Autism ONE for many years. I’m referring, of course, to Jeff Bradstreet, whose body was found in a river on June 19, dead from a gunshot wound to the chest that appeared to have been self-inflicted. It didn’t take long (less than a week) for the antivaccine movement to start speculating about conspiracies in which Bradstreet had been “bumped off” by big pharma, as represented by comments like these:

  • “It’s obvious that he was deliberately killed off because he spoke out against federal deceit, CDC, etc and was a life-saver for many like myself.”
  • “He did NOT kill himself! He was murdered for who he was speaking against, what he knew, and what he was doing about it. He was brilliant kind compassionate doctor with amazing abilities to heal. He was taken. Stopped. Silenced.”
  • “If this does not stink to high heaven I don’t know what does. A fisherman finds his body with a gunshot wound that appears to be a self inflicted. Just how the hell would they know that. Amazingly they happen to find the gun in the river. Wow that is some amazing detective work.”
  • “What a tragic loss of a beloved doctor. I pray the authorities get to the bottom of this story…it seems highly unlikely that a Christian man would shoot himself in thy chest and conveniently fall into a river.”

You get the idea. Meanwhile, others insinuated the existence of, basically, pharma hit squads. Not long afterward, Bradstreet’s family started a GoFundMe page to “find the truth.”

Let me just say one thing. I understand, to some extent, what the Bradstreet family is going through. My family has not escaped without having had one of its members commit suicide. Although it was someone I wasn’t particularly close to, he was very close to family members I am close to. So I understand better than most the pain they are going through. They do have my sympathy. I’ve been there.

That being said, it appears that more information is coming out about what happened in the days leading to Bradstreet’s death. It’s even started to filter out to major media outlets, as in this story published yesterday in the Washington Post, “The mysterious death of a doctor who peddled autism ‘cures’ to thousands“:

Posted in: Health Fraud, Vaccines

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The uncertainty surrounding mammography continues

Screening mammography

Mammography is a topic that, as a breast surgeon, I can’t get away from. It’s a tool that those of us who treat breast cancer patients have used for over 30 years to detect breast cancer earlier in asymptomatic women and thus decrease their risk of dying of breast cancer through early intervention. We have always known, however, that mammography is an imperfect tool. Oddly enough, its imperfections come from two different directions. On the one hand, in women with dense breasts its sensitivity can be maddeningly low, leading it to miss breast cancers camouflaged by the surrounding dense breast tissue. On the other hand, it can be “too good” in that it can diagnose cancers at a very early stage.

Early detection isn’t always better

While intuitively such early detection would seem to be an unalloyed Good Thing, it isn’t always. Although screening for early cancers appears to improve survival, the phenomenon of lead time bias can mean that detecting a disease early only appears to improve survival even if earlier treatment has no impact whatsoever on the progression of the disease. Teasing out a true improvement in treatment outcomes from lead time bias is not trivial. Part of the reason why early detection might not always lead to improvements in outcome is because of a phenomenon called overdiagnosis. Basically, overdiagnosis is the diagnosis of disease (in this case breast cancer but it is also an issue for other cancers) that would, if left untreated, never endanger the health or life of a patient, either because it never progresses or because it progresses so slowly that the patient will die of something else (old age, even) before the disease ever becomes symptomatic. Estimates of overdiagnosis due to mammography have been reported to be as high as one in five or even one in three. (Remember, the patients in these studies are not patients with a lump or other symptoms, but women whose cancer was detected only through mammography!) Part of the evidence for overdiagnosis includes a 16-fold increase in incidence since 1975 of a breast cancer precursor known as ductal carcinoma in situ, which is almost certainly not due to biology but to the introduction of mass screening programs in the 1980s.

As a result of studies published over the last few years, the efficacy of screening mammography in decreasing breast cancer mortality has been called into question. For instance, in 2012 a study in the New England Journal of Medicine (NEJM) by Archie Bleyer and H. Gilbert Welch found that, while there had been a doubling in the number of cases of early stage breast cancer in the 30 years since mass mammographic screening programs had been instituted, this increase wasn’t associated with a comparable decrease in diagnoses of late stage cancers, as one would expect if early detection was taking early stage cancers out of the “cancer pool” by preventing their progression. That’s not to say that Bleyer and Welch didn’t find that late stage cancer diagnoses decreased, only that they didn’t decrease nearly as much as the diagnosis of early stage cancers increased, and they estimated the rate of overdiagnosis to be 31%. These results are in marked contrast to the promotion of mammography sometimes used by advocacy groups. Last year, the 25 year followup for the Canadian National Breast Screening Study (CNBSS) was published. The CNBSS is a large, randomized clinical trial started in the 1980s to examine the effect of mammographic screening on mortality. The conclusion thus far? That screening with mammography is not associated with a decrease in mortality from breast cancer. Naturally, there was pushback by radiology groups, but their arguments were, in general, not convincing. In any case, mammographic screening resulted in decreases in breast cancer mortality in randomized studies, but those studies were done decades ago, and treatments have improved markedly since, leaving open the question of whether it was the mammographic screening or better adjuvant treatments that caused the decrease in mortality from breast cancer that we have observed over the last 20 years.

Given that it’s been a while since I’ve looked at the topic (other than a dissection of well-meaning but misguided mandatory breast density reporting laws a month ago), I thought now would be a good time to look at some newer evidence in light of the publication of a new study that’s producing familiar headlines, such as “Mammograms may not reduce breast cancer deaths“.

Here we go again.

Posted in: Cancer, Public Health

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The war in California over nonmedical exemptions to school vaccine mandates, part 2

The war in California over nonmedical exemptions to school vaccine mandates, part 2

Last week, in the run-up to the 4th of July holiday weekend, something happened that I truly never expected to see. SB 277 became law in the state of California when Governor Jerry Brown signed it. In a nutshell, beginning with the 2016-17 school year, the new law eliminates nonmedical exemptions to school vaccine mandates. When last I wrote about SB 277 for this blog three weeks ago, I explained why I thought it was unlikely that SB 277 would ever become law, so that California could join West Virginia and Mississippi as the only states that do not permit religious or personal belief exemptions to school vaccine mandates. Basically, it was because California is not Mississippi or West Virginia. It’s a hotbed of antivaccine activism. Although statewide vaccination rates are high, there are a number of areas where antivaccine and vaccine-averse parents have led to low vaccine uptake with resultant outbreaks of vaccine-preventable diseases. Most recently, a large outbreak centered at Disneyland served as the catalyst that made it politically possible for a bill like SB 277 even to be seriously considered by the California legislature. Even so, given that California is home to a number of antivaccine celebrities such as Rob Schneider, Alicia Silverstone, Bill Maher, Charlie Sheen, Mayim Bialik, and Jim Carrey, antivaccine pediatricians such as “Dr. Jay” Gordon and “Dr. Bob” Sears, and many of the activists at the antivaccine crank blogs Age of Autism and The Thinking Moms’ Revolution, I was not optimistic.

I was mistaken in my pessimism, and I’m happy about that. I’m grateful to all those who didn’t see passing this law as an impossible task, such as Senators Richard Pan and Ben Allen, and who worked tirelessly to see it through, as some of our regular readers did. I was also pleasantly surprised that Governor Jerry Brown didn’t betray California children by watering down the bill with a signing statement, as he did three years ago when an earlier bill (AB 2109) was passed to make it more difficult for parents to obtain personal belief exemptions to school vaccine mandates.

So since SB 277 is law in California, what now?

Posted in: Politics and Regulation, Public Health, Religion, Vaccines

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NCCIH and the true evolution of integrative medicine

NCCIH and the true evolution of integrative medicine

There can be no doubt that, when it comes to medicine, The Atlantic has an enormous blind spot. Under the guise of being seemingly “skeptical,” the magazine has, over the last few years, published some truly atrocious articles about medicine. I first noticed this during the H1N1 pandemic, when The Atlantic published an article lionizing flu vaccine “skeptic” Tom Jefferson, who, unfortunately, happens to be head of the Vaccines Field at the Cochrane Collaboration, entitled “Does the Vaccine Matter?” It was so bad that Mark Crislip did a paragraph-by-paragraph fisking of the article, while Revere also explained just where the article went so very, very wrong. Over at a blog known to many here, the question was asked whether The Atlantic (among other things) matters. It didn’t take The Atlantic long to cement its lack of judgment over medical stories by publishing, for example, a misguided defense of chelation therapy, a rather poor article by Megan McArdle on the relationship between health insurance status and mortality, and an article in which John Ioannidis’ work was represented as meaning we can’t believe anything in science-based medicine. Topping it all off was the most notorious article of all, the most blatant apologetics for alternative medicine in general and quackademic medicine in particular that Steve Novella or I have seen in a long time. The article was even entitled “The Triumph of New Age Medicine.”

Now The Atlantic has published an article that is, in essence, The Triumph of New Age Medicine, Part Deux. In this case, the article is by Jennie Rothenberg Gritz, a senior editor at The Atlantic, and entitled “The Evolution of Alternative Medicine.” It is, in essence, pure propaganda for the paired phenomena of “integrative” medicine and quackademic medicine, without which integrative medicine would likely not exist. The central message? It’s the same central (and false) message that advocates of quackademic medicine have been promoting for at least 25 years: “Hey, this stuff isn’t quackery any more! We’re scientific, ma-an!” You can even tell that’s going to be the central message from the tag line under the title:

When it comes to treating pain and chronic disease, many doctors are turning to treatments like acupuncture and meditation—but using them as part of a larger, integrative approach to health.


Posted in: Acupuncture, History, Medical Academia, Naturopathy, Science and the Media

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In which I steal a title: Is medicine a scientific enterprise?

Abraham Flexner (left) and Richard Dawkins (right): Enemies of medicine?

Abraham Flexner (left) and Richard Dawkins (right): Enemies of medicine?

A week ago, I attended the Center For Inquiry Reason for Change Conference, where I participated in a panel on—what else?—alternative medicine with—who else?—Harriet Hall and our fearless leader Steve Novella. Before the panel, we all gave brief talks on areas that we consider important. As you might expect, I chose to give a brief introduction to what I like to call “quackademic medicine,” defined as the pseudoscientific medicine being practiced and studied in academic medical centers. As I like to do in order to drive the point home about just how bad it’s become, I chose a couple of truly egregious examples of just how much quackery has infiltrated medical academia. First, I mentioned how the Cleveland Clinic has embraced reiki, which, as I’ve described many times before, is in reality faith healing that substitutes Eastern mysticism for Christian beliefs. Although I could have buried the audience in examples, the other example I happened to choose was this:

Yes, that is exactly what you think it is. It’s the official Twitter account of the Mayo Clinic promoting “energy therapies,” of which reiki is one of the most popular varieties. Basically, these are “therapies” in which it is claimed that the practitioner can either (1) manipulate the “life energy” fields of the patient (e.g., healing touch) or (2) channel “healing energy” into the patient from a source (e.g., reiki). And here was the Mayo Clinic promoting this magical mystical nonsense, linking to an article on its official website entitled “Energy Therapies Offer Support in Healing for Cancer Survivors“:

Posted in: Science and Medicine

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The war in California over nonmedical exemptions to school vaccine mandates

The war in California over nonmedical exemptions to school vaccine mandates

As I write this, I am currently at the Center for Inquiry (CFI) Reason for Change conference, where on Friday Steve, Harriet, and I did a panel on—what else?—alternative medicine and how it’s become “integrative medicine.” As a result, I’ve been very busy, which means that parts (but by no means all) of this post will look familiar to those of you who follow me at my not-so-super-secret other blog. However, it occurred to me after we did our panel discussion that there are important things happening in California that we’ve only barely touched on here on this blog. I’m referring, of course, to a bill (SB 277) that’s wending its way through the California legislature. SB 277, if passed, would eliminate nonmedical exemptions to school vaccine mandates. That’s not to say we haven’t discussed the issue of nonmedical exemptions, of which there are two types: religious and personal belief exemptions (PBEs), which can all be simply described as PBEs. Both Steve Novella and I have addressed them on SBM. For example, when an earlier bill (AB 2109) was passed that mandated that parents seeking PBEs consult with a physician or other listed health care professionals (which, unfortunately, included naturopaths) before a PBE would be granted, I documented how the antivaccine movement strenuously objected even to this minor tweak in the law that would make PBEs slightly more difficult to obtain. Unfortunately, even though, against all expectations, the bill passed, Governor Jerry Brown sabotaged it with a signing statement that betrayed California children by reinstating, in essence, religious exemptions. Specifically, Gov. Brown ordered the California Department of Public Health to include a check box on the form that parents could check to say they have religious objections to vaccines. Parents who checked that box could thus bypass even the anemic requirement to consult with a pediatrician before being granted a PBE.

The problem with nonmedical exemptions to school vaccine mandates is that vaccine-averse and antivaccine parents tend to cluster mostly in areas where white, affluent people live, as demonstrated in California and my own state of Michigan. So, even though antivaccinationists frequently tout high statewide vaccination rates as evidence that the process for obtaining PBEs does not need to be tightened up, they are disingenuously using a straw man argument against vaccine mandates, because it’s the pockets of low vaccine uptake that compromise local herd immunity that are the problem. We see these in Oregon, California, Michigan, and many other states with PBEs, and we also know that ease of obtaining PBEs is correlated with more PBEs and more outbreaks of vaccine-preventable diseases.

All of this came to a head earlier this year with what is now known as the Disneyland measles outbreak, a large multistate outbreak originating at Disneyland and traced to unvaccinated children. This outbreak so shocked California that the unthinkable happened. The possibility of passing a law eliminating nonmedical exemptions to vaccine mandates, something virtually everyone would have considered as much a fantasy as many of the characters played by the recently deceased great Christopher Lee played during his career, suddenly became an attainable goal. Senators Richard Pan and Ben Allen introduced SB 277, which would eliminate the personal belief exemption for children attending state licensed schools, daycares, and nurseries in California.

Posted in: Politics and Regulation, Public Health, Vaccines

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Mandatory breast density reporting legislation: The law outpaces science, and not in a good way

Over the years, our bloggers here at Science-Based Medicine have written time and time again about the intersection of law and science in medicine. Sometimes, we support a particular bill or law, such as laws to protect children against religion-inspired medical neglect; laws making it harder for manufacturers of homeopathic “medicines” to deceive the public; or California Bill AB 2109, a bill whose intent was to make it more difficult for parents to obtain nonmedical exemptions to vaccine mandates but whose implementation after being passed into law was profoundly sabotaged by Governor Jerry Brown. or, more recently, California SB 277, a bill currently wending its way through the California legislature that would eliminate nonmedical exemptions to school vaccine mandates and has, not surprisingly, engendered extreme resistance from the antivaccine crowd, including by Robert F. Kennedy, Jr. In the vast majority of cases we explain how the law lets us down when it comes to science in medicine, and, unfortunately, examples are many: Naturopathic licensing laws; supplement regulation (or, more appropriately, lack of regulation); misguided, deceptive, and patient-hostile “right-to-try” laws; state laws regulating medical practice that allow quackery to flourish unchecked; laws regulating pharmaceutical cost transparency that ask the wrong question.

The case I will discuss here is unusual in that it is a case of the law getting ahead of what the science says in a manner that will likely do little, if any, good for patients, cause a lot of confusion until the science is worked out better, and end up costing patients money for little or no benefit. I am referring to laws mandating the reporting of high-breast-density to women with dense breasts undergoing mammography. These laws are sweeping the country (albeit not as rapidly as “right-to-try” laws), with a total of 22 states having passed them as of today since Connecticut became the first to do so in 2009. The most recent of these laws went into effect in my own state of Michigan exactly one week ago:

Women with dense breast tissue — the sort that can hide potentially deadly tumors from routine mammograms — must be notified in writing and encouraged to consider additional tests under a new state law that is effective Monday.

While mammograms remain the gold standard for detecting breast tumors, they’re less reliable in almost half of women with dense breast tissue. Dense or fibrous tissue shows up as splotches of white on a mammogram — so do tumors.

That will likely surprise many of the millions of women who rely on mammography for catching the earliest signs of cancer, said Nancy Cappello. The Connecticut woman was shocked in 2004, when her gynecologist found a lump — advanced cancer that had already spread to her lymph nodes — just months after a mammogram deemed her cancer-free.


Posted in: Cancer, Politics and Regulation, Public Health

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