One thing you’ll notice from all science deniers is a tendency to overstate or overuse a fairly solid scientific principle inappropriately. The anti-vaccine crowd takes this to a whole new level. And what we’re going to discuss today is the hygiene hypothesis, which describes how early exposure to microorganisms may assist the immune system to avoid allergic reactions.
Although we’ll discuss the scientific evidence in support of the hypothesis later in this article, anti-vaxxers tend to abuse it. They conflate potentially beneficial organisms, such as the gut biome, with dangerous and deadly pathogens, like measles and polio. The former may be a critical component of the hygiene hypothesis, but the latter is not.
Time to tackle this scientifically controversial topic, and put to rest one of the tropes of the anti-vaccine religion that all germs are good. Continue reading “Hygiene hypothesis – what is it, and why the anti-vaccine religion abuses it”
Immune system myths are one of the common claims of the junk medicine crowd, especially the anti-vaccine activists. The pseudoscience of the immune system is pernicious and possibly dangerous.
It’s frustrating that the pseudoscience from the junk medicine crowd claims that this supplement or that food is critical to boosting the immune system – hang out for a day on Facebook, and you’ll probably see way too many memes saying that all you have to do to boost your immune system is eat a blueberry kale smoothie. I still see that dumb banana claim that it cures cancer.
The problem with these immune system myths is that they overlook or ignore a basic physiological fact – the immune system is a complex interconnected network of organs, cells, and molecules that prevent invasion of the body by hundreds of thousands, if not millions of pathogens and other antigens every single day.
And no matter how much individuals try to trivialize the complexity of the immune system, it does not make it so. One can claim all day long that downing a few tablets of echinacea will boost the immune system to prevent colds (it doesn’t), it doesn’t make it scientifically accurate. Nor does it create an accurate description of the immune system.
Continue reading “Boosting the immune system – that’s what vaccines do”
I wrote an article about how to critically analyze pseudoscience and misinformation so that you might skeptically analyze evidence supporting a claim, even if it appeared to be accurate. On Facebook, Twitter and many internet sites (including Wikipedia), there is an amazing tendency of individuals to accept what is written as “the truth” without spending the effort to determine if what is written is based on accurate science.
But if you’re going to make an extraordinary claim, like bananas prevent cancer, you’re going to have to provide extraordinary evidence. And if you’re going to push a pseudoscientific claim, please read what you claim as evidence. Because we have a case here, where the evidence isn’t even in the same universe as the claims.
Continue reading “Bananas prevent cancer – debunking another myth about food”
There are so many annoying issues about the antivaccination cult, that most of us can’t even keep up with it. If only they would provide evidence published in high quality, peer reviewed journals (yes, a high standard, but if we’re talking about public health, a high standard is required), the fake debate would move into a real scientific discussion. One of their favorite feints against real evidence is to push people, like Tetyana Obukhanych, who appear to have great credentials, but once you dig below the surface, not much is there.
One of the most irritating problems I have with the antivaccination movement is their over-reliance on false authorities, where they trumpet the publications or commentary from someone who appears to have all of the credentials to be a part of the discussion on vaccines, but really doesn’t. Here’s the thing – it simply does not matter who the authority is or isn’t, all that matters is the evidence.
For example, Christopher Shaw and Lucija Tomljenovic, two researchers in the Department of Ophthalmology at the University of British Columbia, have, for all intents and purposes, sterling credentials in medicine and science. However, they publish nonsense research (usually filled with the weakest of epidemiology trying to show population level correlation between vaccines and adverse events) in low ranked scientific journals.
Now the anti-vaccine world has a new hero – Tetyana Obukhanych. Continue reading “Tetyana Obukhanych – another anti-vaccine appeal to false authority”
In a lawsuit filed with a court in Israel a young girl and her mother are suing, apparently (since I do not have the lawsuit, I’m reporting based on a news report that included an interview with the girl’s mother) claiming that the girl was negligently administered an HPV vaccine because the family was not warned that it can trigger an autoimmune disease, lupus. Because the evidence does not support the claim that there is a link between the HPV vaccine and lupus, the claim is unfounded, and should be rejected. The Ministry of Health is not required – and should not – warn parents about risks vaccines do not have: that would be misleading those parents.
Continue reading “HPV vaccine and lupus – bad expert testimony in a lawsuit”
When I was in public school in the 1970s, I honestly recall few kids with food allergies. Today, child food allergies are so high, some school system ban peanut butter and jelly sandwiches for lunch. And if you’re an American, peanut butter and jelly sandwiches are an iconic lunch food for school age children.
My recollection of few of any child food allergies when I was a child myself. As an anecdote, that’s not too powerful, but it’s borne out by actual scientific data. For example, Australian children have the highest rate of food allergy in the world, with up to 10% of infants and 20% of school-aged children who have been diagnosed with a food allergy. Large studies, including a retrospective study of over 1 million children in the USA, have shown that overall food allergy prevalence was 6.7%. The most common allergenic foods were peanuts (2.6%), milk (2.2%), egg (1.8%), shellfish (1.5%), and soy (0.7%). Furthermore, food allergies were associated with development of respiratory issues such as asthma (2.16X risk over those without food allergies) and rhinitis (2.72X risk).
In Australia, there has been a 50% increase in hospital visits for anaphylaxis from 1998 to 2012, the most severe allergic reaction. Infants and toddlers accounted for much of this increase. Anaphylaxis is the most serious allergic reaction to anything including food.
What stumps a lot of researchers is why the increase? Has our food supply become more allergenic? Some blame the addition of GMOs to our food supply, but that’s nonsense. In fact, some very good research may point us toward new recommendations to prevent child food allergies.
Continue reading “Child food allergies – time to revise our recommendations and thinking”
One of the most ridiculous pseudoscientific claims that I keep hearing from the junk medicine crowd is that this supplement or that food is critical to immune system boosting – this myth is so prevalent, I had to debunk it with lots of real science.
These type of claims ignore one basic physiological fact: the immune system is a complex interconnected network of organs, cells, tissues and biomolecules that prevent invasion of the body by hundreds of thousands, if not millions of pathogens every day.
And no matter how much individuals try to trivialize the complexity of the immune system by claiming that downing a few tablets of echinacea will boost the immune system to prevent colds (it doesn’t), it still doesn’t make it a scientific fact.
So let’s take a look at why “immune system boosting” can be considered a pseudoscience. And to discuss pseudoscience, we will have lots of real science.
Continue reading “The pseudoscience of immune system boosting”
This article has been updated and republished to clear up some points, and add another section. The comments for this article are closed, please comment at the new article.
One of the most ridiculous pseudoscientific claims that I keep hearing from the junk medicine crowd is that this supplement or that food is critical to boosting the immune system – it’s so prevalent that I believe I read it several times a day.
These type of claims ignore one basic physiological fact: the immune system is a complex interconnected network of organs, cells, and molecules that prevents invasion of the body by hundreds of thousands, if not millions of pathogens every day. And no matter how much individuals try to trivialize how complicated the immune system is by claiming that downing a few tablets of echinacea will boost the immune system to prevent colds (it doesn’t), it doesn’t make it science.
And it isn’t that simple.
Continue reading “Boosting the immune system – sorting science from myth”
If you explore the dark and myth filled back alleys of the antivaccination movement, you will find a wide variety of myths that try to convince people that vaccinating children is dangerous. I’ve covered and refuted many of the myths, although the vaccine deniers tend to rely on zombie myths that keep returning over and over again, never quite dying.
These myths range from outrageous, such as it’s a conspiracy of the government to control population (which I find odd, since the government is barely competent enough to build a post office), to scientific sounding, but ultimately pseudoscientific claims. There are a lot of great websites that debunk many of the myths, and they’re easy to find.
One of the most annoying legends of the antivaccination cult is that multiple vaccinations weakens the immune system of the poor baby’s tender physiology. About that immune system? It’s comparatively strong relative to almost every other organ system in the body.
Continue reading “Multiple vaccinations weakens the immune system – a myth”
If you hang out in various vaccine discussions, you will hear all kinds of odd, unscientific ideas about the immune system of infants. One of the major issues is a substantial oversimplification of the immune system (of adults and infants), mostly thinking it’s one “thing,” ignoring the complex physiology of the immune system which is an almost infinite number of interactions between cells, proteins and factors, organs, blood, fluids, and other physiological systems.
Generally, the popular assumption is that the infant immune system is weak, making those children more prone to viral or bacterial infections. The antivaccine crowd uses this belief to either state that vaccines won’t work or might actually harm the immune system, along with some overstated magical properties of human breast milk to prevent infection.
But according to a new study, led by Dr. Brian Rudd of the Department of Microbiology and Immunology at Cornell University, published in the Journal of Immunology, the immune system of newborns and infants is actually stronger than an adult’s immune system. Unfortunately, it has a short “memory.” Continue reading “Infant T cells don’t remember pathogens–causes weaker immunity”