Search Results for "vaccines"

Sep 30 2014

Dr. Oz, Autism, and GMOs

It is no longer news that Dr. Oz has long ago abandoned any pretense to scientific rigor and is simply another scaremongering hawker of snake oil and nonsense. Still, it’s hard not to marvel when he sinks to a new low.

On a recent show Oz’s target was genetically modified organisms (GMO). This is not new for Oz, he has hosted anti-GMO activists in the past, warning his audience about non-existent health risks.

This time around Oz and his guest are claiming that pesticides used with certain GMO varieties may cause autism. Why is it always autism? It’s likely at least partly due to the fact that awareness of autism has been increasing in the last 2 decades, creating the false impression that autism itself is increasing. This leads to numerous false correlations (most famously with vaccines) and the assumption of cause and effect (often to support a preexisting bias). As you can see from the graph, however, the rise in autism diagnoses tightly correlates with increased organic food sales – but I guess you have to cherry pick the correlation you want.

The narrative that Oz spun for his audience was this: GMO is tied to pesticide use. Those pesticides are hazardous to your health, and specifically might cause autism. Organic food is pesticide free, and going organic can actually cure autism.

Every link in that chain of argument is misleading or patently wrong.

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20 responses so far

Sep 22 2014

Vandana Shiva and GMOs

Published by under General Science

A recent New Yorker article by Michael Specter does an excellent job of putting the activism of anti-GMO campaigner, Vandana Shiva, into perspective. Shiva has since written a very critical response to Specter, and The New Yorker has responded to Shiva. The exchange is very enlightening.

Shiva is a dedicated anti-GMO activist, perhaps the most widely known and successful in the world. Specter paints a picture of Shiva as more than an ideologue – a “demagogue” who has created a dramatic narrative that is meant to frighten the public about GMOs, but has little to do with reality. For Shiva, her anti-GMO stance is part of a broader economic and social ideology. In her vision of the world, local farmers would feed the world with organic farming, without fertilizer or corporate involvement. The actual science about GMOs seems to be irrelevant to her narrative.

Specter illustrates several example. There are definitely religious undertones to her activism. For example, Specter quotes her from a speech earlier this year:

“G.M.O. stands for ‘God, Move Over,’ we are the creators now,”

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25 responses so far

Sep 12 2014

Features of Denialism

Published by under Pseudoscience

Denialism is a thing. What I mean is that denialism is a definable intellectual strategy, with consistent features that tend to cluster together. I first wrote about denialism 12 years ago, before global warming denial made the term more widespread. I pointed out that certain beliefs tend to follow the same fallacious arguments – HIV denial, creationism (evolution denial), holocaust denial, and mental illness denial. I would add now global warming denial and germ theory/vaccine science denial.

I characterized denialism as a subset of pseudoscience, one that tries to cloak itself in the language of skepticism while eschewing the actual process of scientific skepticism. But further, denialism exists on a spectrum with skepticism, without a clear demarcation in between (similar to science and pseudoscience). People also tend to use themselves for calibration – anyone more skeptical than you is a denier, and anyone less skeptical than you is a true believer.

Geneticist Sean B. Carroll (not to be confused with the physicist Sean M. Carroll) in his 2007 book, The Making of the Fittest: DNA and the Ultimate Forensic Record of Evolution, lists what he identified as the six core features of denialism. I think they make an excellent list, and would like to expand on them:

1) Cast doubt on the science.
2) Question the scientists’ motives and integrity.
3) Magnify any disagreements among the scientists; cite gadflies as authorities.
4) Exaggerate the potential for harm from the science.
5) Appeal to the importance of personal freedom.
6) Object that acceptance of the science would repudiate some key philosophy.

As you will see, all of these strategies are insidious because they are extreme versions of reasonable positions. Their underlying principles are sound, it is their specific application that is the problem.

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40 responses so far

Sep 11 2014

19 Years of Feeding Animals GMO Shows No Harm

Published by under General Science

Often GMO critics will argue that the biotech industry is conducting a massive experiment with our food supply by introducing genetically modified organisms. The implication is that GMOs are not adequately studied, which is at best debatable, but in a way they are correct. We can look at what has happened in the 19 years of GMO use starting in 1996 to see if there have been any adverse effects.  A newly published study, Prevalence and impacts of genetically engineered feedstuffs on livestock populations, does just that. (Full study, may be behind a paywall.)

The study authors, Van Eenennaam and Young, first review the existing literature on animal feeding studies. They then review available data on livestock outcomes to see what effect feeding them mostly GMO since 1996 has had, if any.

GMO Feeding Studies

The first regulatory hurdle for safety testing of GMOs is to establish “substantial equivalence.” Researchers must show that the genetically engineered crop is essentially the same as the parent variety in all ways except for the desired introduced genetic change. The authors report:

Over the past 20 yr, the U.S. FDA found all of the 148 GE transformation events that they evaluated to be substantially equivalent to their conventional counterparts, as have Japanese regulators for 189 submissions.

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16 responses so far

Sep 04 2014

Doubt and Confusion over Global Warming

Published by under General Science

Global warming (or global climate change) continues to be a contentious issue because of the political ramifications of the science. When I talk to those who doubt human-caused (anthropogenic) global warming inevitably they express a strong political opinion about the implications of AGW – that it is being used to justify government take-over of private industry.

There are also those on the left who embrace AGW as a way of reinforcing their ideological economic opinions. None of this makes AGW correct or mistaken. The political implications of AGW are irrelevant to the science.

I might be tempted to say that the controversy over AGW is partly being driven by the fact that the science is very abstract. There is a ton of data that can be used to support just about any opinion you wish to defend, if you are willing to cherry pick. The data is also somewhat abstract and is very complex.

While I do think it’s true that the nature of the data regarding AGW does exacerbate the controversy, I can’t say it is a necessary component, as there are controversies surrounding far simpler rock solid science, such as the efficacy of vaccines.

In any case, AGW does have a particular challenge in that the discussion is very statistical and graph heavy, two things which are easy to manipulate and sow confusion.

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148 responses so far

Aug 28 2014

Bt and Leukemia – Another Anti-GMO Myth

The headline of an article on the Organic Consumers Association proclaims, “New Study Links GMO Food To Leukemia.” The same article trumpets the thoroughly discredited Seralini study. The claim is not true, but is part of a pattern of behavior that is depressingly familiar.

The pattern is not unique to anti-GMO activism. In fact, it seems to be the default human behavior. We tend to search for information that supports our currently held views. The more passionate we are about those views, the more industrious we are in finding apparent support, even if it means twisting and distorting information.

I find myself doing this all the time – if a study or new piece of information directly opposes something I currently believe, then my mind immediately starts finding reasons to dismiss the information. I have the opposite reaction when the information confirms my current beliefs, I find reasons to accept it.

But then I consciously step back and try to take an objective look at the information. This is not always easy, and may involve specialized knowledge I don’t have. I then have to look to experts to see if there is a clear consensus opinion. In other words, I don’t just stick with my knee-jerk reaction to information. I go through a process of evaluation and critical analysis. My goal is to come to a valid conclusion, one that will hold up under critical assault, whatever that conclusion is. Meanwhile I have to remain open to the possibility that my conclusion is wrong or incomplete, that I missed something or made an error in my process.

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25 responses so far

Aug 26 2014

Scientific Literacy

I was recently interviewed for an article on Medical News Today by David McNamee regarding Why is scientific literacy among the general population important? The topic, of course, is very important to me, as I have spent a great deal of my time attempting to promote scientific literacy generally, with an emphasis on medical science since that is my specialty.

Carl Sagan articulated the basic issue well (of course) – to paraphrase, we live in a civilization increasingly dominated by science and technology, and with a populace less and less able to understand current science and technology. This is a recipe for disaster.

There are many examples that should be readily accessible to regular readers of this or other science blogs: are vaccines safe and effective, how much of our resources should we invest in reducing carbon emissions, are GMOs safe and are they a benefit or risk to the environment, should we put fluoride in public water supplies, how should alternative medical treatments be regulated and how should we invest further in clinical trials of their efficacy?

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23 responses so far

Aug 12 2014

Tocco’s Anti-vaccine Narrative

Part of the scientific approach to knowledge is to integrate information at various levels. It’s important to get the tiny facts correct, but you also have to put those facts into progressively broader and deeper frameworks. Theories are informed by facts which in turn make sense only in the context of the theory.

I try to take this approach with topics on this blog, by not only spending time addressing specific facts but also trying to see the big picture. For example, Mary Tocco, who is an anti-vaccine activist, was recently given space for a guest column on Michigan Live. I will go through and deconstruct her specific claims, but it’s also helpful to view her article in the broader social context.

Tocco is part of Michigan Opposing Mandatory Vaccination, or MOM (how can you not love “mom”). In her article she writes:

“The authors labeled Michigan Opposing Mandatory Vaccines an anti-vaccine group. Our organization is about protecting parental right to choose whether or not to use vaccines as a method of health care for themselves and their children.”

From this one paragraph we can see many of the threads currently weaving through culture. The big picture is that there is an ideological struggle going on between those who take a science-based worldview and believe that rational regulations should be based on the best science available, and those who wish to promote some other agenda that is not science-based.

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8 responses so far

Aug 07 2014

Antibiotic Resistant Markers in GM Crops

Published by under General Science

Neil deGrasse Tyson stepping into the public GMO debate has raised the profile of this issue, and so I am likely going to return to the issue as new claims surface.

Recently Jeffrey Smith posted a Youtube video in which he directly challenges Tyson on his claim that people should “chill out” about transgenic GM technology.  Smith is an anti-GMO activist, founder of the Institute for Responsible Technology, and producer of the anti-GMO documentary, Genetic Roulette — The Gamble of Our Lives. 

For further background, Smith attended Maharishi University of Management in the 1980s and was a Natural Law Party member in 1996 and participated in a TM-Sidhi program yogic flying demonstration in Des Moines, Iowa.

His latest anti-GMO effort is full of specific claims I have not previously addressed. He makes an attempt to seem as if his claims are scientific, but upon investigation it quickly becomes clear he is cherry picking studies and then wildly speculating way beyond the evidence. It would take many articles to deconstruct his 20 minute Gish-galloping video, so I will pick out a few prominent claims.

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79 responses so far

Jul 25 2014

Mike Adams is a Dangerous Loon

Where do I even begin? Mike Adams, the self-proclaimed “healthranger” who runs the crank alt-med site naturalnews, has sunk to a new low, even though he was already scraping bottom.

Adams combines the worst CAM propaganda with a blend of conspiracy theories from across the spectrum, while selling supplements and other nonsense. He portrays himself as someone who is engaged in a righteous battle against the forces of evil – so hardly someone who is engaged in rational discourse.

In a recent rant, however, he has become a parody even of himself. This time he is raving about Monsanto and GMOs, writing:

Monsanto is widely recognize (sic) as the most hated and most evil corporation on the planet. Even so, several internet-based media websites are now marching to Monsanto’s orders, promoting GMOs and pursuing defamatory character assassination tactics against anyone who opposes GMOs, hoping to silence their important voices.

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271 responses so far

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