Skeptophilia (skep-to-fil-i-a) (n.) - the love of logical thought, skepticism, and thinking critically. Being an exploration of the applications of skeptical thinking to the world at large, with periodic excursions into linguistics, music, politics, cryptozoology, and why people keep seeing the face of Jesus on grilled cheese sandwiches.
Showing posts with label anti-GMO. Show all posts
Showing posts with label anti-GMO. Show all posts

Friday, December 30, 2016

Ketchup claims

It goes without saying that advertisers will do or say damn near anything to sell their products, but every once in a while a marketing campaign will backfire.  That happened this week -- and surprisingly, because enough people knew enough science to call bullshit on the claim.

The company was Hunt's, maker of ketchup and various other tomato-based products.  They launched a campaign to inform customers that they were not using GMO tomatoes, and created a commercial to tell everyone about it.  "No matter how far afield you look, you won’t find a single genetically modified tomato among our vines," the video announcer says proudly.  The camera then pans across a field of tomatoes, and the announcer says, "No GMOs in sight."

[image courtesy of the Wikimedia Commons]

The problem is, there are no GMO tomatoes being grown anywhere in North America or Europe.  The only GMO tomato that was ever widely available was the slow-ripening "Flavr Savr" cultivar, which peaked in numbers in 1998 and a few years thereafter completely disappeared from commercial farms.  Since then, no GMO variety of tomato has ever reached the market or even been grown outside of research laboratories.

So the claim by Hunt's would be equivalent to Evian bragging that they sold only gluten-free sparkling water.  Even if there was reason to believe that GMO tomatoes had negative health effects, which they don't.

Fortunately (miracle of miracles!) the company was immediately called out on their ridiculous announcement.  One person wrote on the Hunt's feedback website, "It's terribly unfortunate you're lying to consumers, Hunt's.  GMO tomatoes are not available to the market and yet you're implying they are."  Another was even more blunt: "Way to go, Hunt's - jump on the anti-science band-wagon in order to bilk a premium from some rubes.  What's next?  Homeopathic ketchup?  I guess it's Heinz for me from now on...  I like Heinz anyway.  And science.  No fearmongering with my fries, thanks."

Of course, the underlying problem is twofold.  First, the vast majority of GMO products have been safety-tested to a fare-thee-well, and have been shown completely safe (despite the alarmist claims that get flung about periodically).  Second, we've been tinkering with the genes of both animals and plants for millennia, only doing it by selective breeding rather than direct DNA manipulation -- and we've yet to produce a crop that directly causes autism or cancer or birth defects or any of the other wild claims you hear.

And, of course, there's a third problem that is recognized less often -- that there have been direct benefits of some GMO crops that extend well beyond providing revenue to Monsanto.  GMO virus-resistant papayas saved the crop from being destroyed into commercial irrelevance by the ringspot virus; if you've eaten papaya in the United States, you've eaten a GMO.  It's hoped that a fungus called "black sigatoka" that is threatening the Cavendish banana (by far the most common cultivar) with extinction can be handled the same way; likewise the world's orange crops, under attack by huanglongbing (citrus greening disease).  Selective breeding is too slow, and requires the location of resistant strains to breed into the population -- impossible with the banana, which has no seeds and is reproduced by asexual means only, and very slow with the orange, which takes ten years or more from seedling to fruit.  Without GMO techniques, we might be enjoying the last generation of bananas and orange juice with our breakfast.

The anti-GMOers, however, are far more responsive to wild claims and fear talk than they are to facts, and every time any genetically modified crops are introduced, we undergo another round of panic.  I was pleasantly surprised, however, to see the response to the Hunt's claim.  Pinned to the wall by the facts, the company had to respond.  A spokesperson for ConAgra, which owns Hunt's, said the following:
Many people are interested in what's in their food, and we want to provide them the information they are looking for.  As a company, ConAgra Brands believes in giving people choice by offering foods that are made with and without GE ingredients. 
While it’s true that all tomatoes are non-GMO, there are tomato products that contain GE ingredients.  We recently updated many of our Hunt’s tomato products including diced and crushed to meet Non-GMO Project Verification standards, so look for the seal at shelf.
So claiming that their tomatoes (implying, of course, only their tomatoes) are non-GMO isn't at all misleading.

However, it's apparent that ConAgra and Hunt's isn't fooling anyone, any more than Evian would if they implied that only their sparkling water was gluten-free.  Amazingly enough, science for the win.

As for me, I'm going to go have another cup of coffee.  Made entirely without using spent nuclear reactor fuel.  Make sure you're safe -- demand that your coffee is certified plutonium-free.

Monday, September 26, 2016

RNA attack

It's a common strategy.  If simply spouting alarmist rhetoric doesn't cause your target audience to panic sufficiently, throw in some quasi-technical nonsense to make it sound like your position actually has scientific merit.  Unfortunately, it has a way of working, as people like Vani "The Food Babe" Hari discovered when she launched her "if you can't pronounce it, you shouldn't be eating it" campaign, which if it succeeded, would rob your diet of most of its essential nutrients, leaving behind only easy-to-say stuff like "starch."

It's the old "if you can't dazzle 'em with brilliance, baffle 'em with bullshit" approach dressed up in new clothes.  It's a favorite strategy of such anti-science types as the anti-vaxxers and anti-GMOers (who in many cases are one and the same).  Witness the latter's latest sally against the scientific establishment, which revolves around the claim that if you're eating GMO food, it contains RNA (true) and this RNA can alter your own genes (false).

I learned about this bizarre statement from Sterling Ericsson's wonderful blog A Science Enthusiast, wherein we learn that the anti-GMO cadre have gone from the diffuse claim that all GMOs are bad to proposing a specific mechanism by which they do their dirty work -- they contain "engineered RNA" that then can get into your cells and interfere with your normal cellular processes.  And to the non-scientific, even the actual research can certainly sound like the stuff of science fiction; gene-modification techniques like CRISPR, switching genes on and off with RNA interference, inserting DNA from one species into another to generate organisms that express "foreign" genes as they would their own.

[image courtesy of Christopher Bock, the Max Planck Institute, and the Wikimedia Commons]

My objection to the anti-GMO stance has always been that it lies squarely in the midst of the package-deal fallacy; just as our "natural" genes have thousands of different functions, each GMO is different from all the others.  GMOs are no more all bad than genes are, and each one has to be tested for safety individually.  (And they have been, extensively.)  But the addition of the "ingesting engineered RNA" claim adds a whole new layer of pseudoscience to the anti-GMO stance.  Rather than making it stronger, it makes it weaker, and (further) shines a harsh light on exactly how unscientific the claim itself is.

Because all of the food we eat contains nucleic acids, DNA and RNA both.  If you eat lettuce, you're eating (among other things) lettuce DNA and RNA.  If you eat a hamburger, you're ingesting the genetic material from cows (and tomatoes and whatever else you like on your burger).  If you eat "Slim Jims," you're consuming DNA from... well, whatever the hell organism "Slim Jims" are made from.  I dunno.  But presumably it was some kind of living thing at some point that had its own genetic material.

And miraculously, we don't start expression lettuce, cow, tomato, or Slim Jim genes, nor do any of those interfere with our own gene expression.  The reason is that in your small intestine you have enzymes called nucleases that break down the DNA and RNA of the organisms we eat, specifically to prevent us from accidentally incorporating foreign genetic material into our cells, which could cause us to express foreign proteins (depending on what they were and where they were produced, this could certainly be deleterious).  So the DNA and RNA in our food -- which is there even in the most organic-y of organic free-range locavore diets -- never survives the passage through our digestive system intact.

That includes any "artificially engineered" DNA and RNA, because your body can't tell the difference between the genetic material that came from a healthful, natural, non-engineered peach and that which came from BT corn purchased directly from Monsanto.  It all breaks down, natural and artifical alike.  If there's a health effect from eating GMOs, it doesn't come from the DNA and RNA -- it comes from the proteins they produced within the genetically modified organism before you ate it.

And like I said, those have been tested to a fare-thee-well.  But this is not likely to persuade the anti-GMOers, for whom the naturalistic fallacy is very nearly one of the Ten Commandments.

So anyhow, be on the lookout for this.  Call it out for the nonsense it is.  As I've said many times before, you do not make your point stronger by leaning on poorly-understood science.  All you do is make it seem like the rest of your claim has little merit as well -- which in this case, seems to be the truth.