By Jon Entine
Friday, May 08, 2015
Do you like Ruby Red grapefruits? How about Italian
pasta? Vietnamese rice? Ever try an über-delicious Osa Gold pear from Japan?
If you are a food devotee, and pride yourself on ‘going
organic,’ you could more than likely pick up samples of each of these
specialties at your local Whole Foods. And that way you could avoid the ‘taint’
of eating food that might have come in contact with ‘dangerous’ GMOs. You know,
foods created in laboratories. By whitecoat scientists. Untested and unlabeled.
Ticking health time bombs. Frankenfoods.
Oops. Better change your menu, because those four foods,
often sold as organic, were created in laboratories. By scientists. In white
coats, more than likely.
In fact, almost none of our foods that we eat today is
the product of Nature’s way. Consider corn, which supplies about 21 percent of
human nutrition across the globe. Scientists now believe it is the descendant
of an ancient wild grass with relatives in Mexico today known as teosinte. It
had kernels all right: inedible black ones that could crack your teeth. That
was before humans intervened to bend Nature.
Beginning about 10,000 years ago, it is believed, our
ancestors set up field labs—yes that ugly word—to randomly experiment on this
odd grass with hard buds. Through trial and error, cobs became larger and
slightly more edible over the centuries, and with more rows of kernels,
eventually taking on the form of modern maize. Modern sweet corn yields 100
times more than teosinte, a testament to genetic modification.
Modern bananas, eggplant. Brussels sprouts, and almost
every food we eat, have been generically altered in some way by humans. Over
the centuries we’ve genetically modified thousands of foods. Scientists at the
International Rice Research Institute developed flood tolerant rice by moving
rice genes from an ancient rice variety to modern varieties using marker
assisted breeding. The modified rice has led to a boom in yields in flood prone
areas.
GMO critics seem comfortable with that kind of genetic
manipulation. But when it comes to inserting genes from one species into
another, many people go “yuck,” claiming that it is “totally different” than
conventional breeding.
Understanding Genetic Modification
Well, it is and it is not. Nature itself has moved genes
‘naturally’ across species lines since the dawn of evolution. And we all carry
within us the seeds of our ancestral past, which includes our genetic
benefactors: bacteria, viruses, plants, fish, extinct dinosaurs and the panoply
of life that we see today. Indeed, we share 30 percent of our genome with the
marigold, 60 percent with worms. And 99 percent percent with apes. All life is
genetically tied together; we all have common ancestors reaching deep into
prehistory. In Nature, genes are just genes; what makes them different is how
they are expressed. So moving genes from one species to another is not very
radical when one understands the course of evolutionary history.
Let us look at some examples of genetic modification that
are different than conventional breeding—genetic engineering. Thirty five years
ago, the Hawaiian papaya was facing what many thought was its end game,
threatened by the ringspot virus that had first appeared in the 1950s in Oahu,
nearly wiping out the entire island’s production. By the 1980s, most farmers
and scientists believed the delicious fruit was doomed.
But not Dennis Gonsalves. A local Hawaiian, Gonsalves had
grown up with the devastation. While others threw up their hands, he went into
the laboratory, working in Hawaii and at Cornell University, where he was a
plant pathologist. With government funding, and with major corporations
donating the patent rights to facilitate his research, Gonsalves placed a small
snippet of “foreign” DNA into the papaya—a virus that effectively inoculated
the papaya from the ringspot disease.
“Eeeew,” say GMO critics: a virus injected into food?
That is dangerous. That is mixing across species. That is Frankenstein’s work.
Well, it is really not much different than what happens
every day in millions of doctor’s offices around the globe. Humans are injected
with viruses in vaccines to protect against polio or other diseases. Yes, in
theory, getting a vaccine is not much different than genetically engineering a
vaccine into a plant. The genetically engineered papaya carries just trace
amounts of the virus. In contrast, if you bite into a conventional or organic
papaya that is infected with the virus—and many people do because it is not
always easily observable—you will be chewing on 10-fold more viral protein, and
it will not harm you.
What happened? Gonsalves’ pioneering work rescued a dying
fruit and revived a critical Hawaiian industry. Today there is still no other
method to control this disease. In fact, 80 percent of all Hawaiian papaya is
genetically engineered, and it is eaten in many countries, sold in Costco and
grocery stores alike. GMO papaya is perfectly safe, and has been a savior.
Biotech 2.0
The future of genetic engineering, what I refer to as
“Biotech 2.0,” will lead to many stories similar to the rescue of the papaya—if
GMO opponents are not successful in scaring people away from this technology. A
nasty pest, the fruit and shoot borer, feasts on eggplant (brinjal), a staple
in some countries like Bangladesh. It has devastated production. Farmers are
forced to spray dangerous insecticides as much as twice a day. That is
expensive and leads to collateral health problems in workers. The World Health
Organization estimates that 300,000 people die every year in Bangladesh and
other less developed countries because of the overuse of pesticides.
That is shameful when there are GMO alternatives. To
confront this potentially devastating challenge, researchers in Bangladesh
partnered with Cornell University to develop Bt brinjal, South Asia’s first GMO
food crop. It is not owned or patented by major corporations. It is grown from
public sector seeds, developed for distribution to resource-poor shareholder
farmers.
Bt brinjal has natural pesticides built in—the kind found
in every plant—engineered into it. Pamela Ronald, a distinguished plant
geneticist at the University of California-Davis, has spent her career trying
to draw on the best sustainable practices of organic and conventional
agriculture. As she has explained it, organic farmers in developed Western
countries often spray an insecticide, called Bt, that is highly specific to
pests but is nontoxic to birds, fish and humans. It is less toxic than table
salt. It has been used safely in organic farming for nearly 100 years.
In the organic approach, she noted, the bacteria is grown
in industrial fermentation tanks and processed to produce a formulation of
bacterial spores that is sprayed on plants. But this strategy does not work
well for eggplant farmers in Bangladesh. That is because sprays are expensive,
hard to find in Bangladesh, and do not prevent the insect from getting inside
the plant.
With genetic engineering, scientists cut the gene out of
the bacteria and inserted the bacterial gene directly into the eggplant genome.
It works and it is safe; just ask organic farmers.
Bt brinjal has been a huge success—much to the chagrin of
the powerful anti-GMO lobby, which knows that its adoption could open the floodgates
to new nutrition and health focused public sector GMO foods. To prevent that
from happening, they have mounted a vicious public relations effort to scare
farmers and the public alike that Bt technology—yes, the one used safely by
organic farmers around the world—is somehow unsafe in Asia.
Activists are using what amounts to a “nuclear option,”
raising the specter of health fears. Among other nefarious tactics, anti-GMO
activist posing as journalists have been telling farmer that their children
could become paralyzed from eating Bt brinjal. This parallels the
sterility/infertility myth that has been spread about GM crops elsewhere in the
world, in particular in sub-Saharan Africa. Bt crops are activists’ worst
nightmare: they offer a compelling narrative about how this technology can help
the poor.
The exact same technology sweeping through Bangladesh has
been used in India, on cotton fields. Introduced barely a decade ago, now
upwards of 90 percent of Indian cotton is grown using Bt seeds. It has resulted
in a huge jump in output, and just as importantly, a sharp reduction in health
problems related to the overuse of pesticides. Bt corn and soybean is widely
grown in the United States.
You may have read, from anti-GMO websites or oh so
reliable sources like Dr. Oz, that the use of GMOs has unleashed a pesticide
tsunami that is sweeping across the plains. Not. According to the USDA, since
the introduction of Bt crops in the United States, over nearly 20 years, the
U.S. corn farmers have cut their chemical sprays ten fold. It is win-win—unless
your goal is to sabotage the technology.
The Naturalist
Fallacy
So the idea that someone should consider rejecting
genetically modified food because scientists are “playing God” by “fiddling
with Nature” is—let us use a gentle term—hogwash. Such facile comments are
examples of what is called the “naturalist fallacy”—the silly belief that organic
foods are somehow more “natural” than conventional foods, and superior/more
nutritious/safer than genetically modified alternatives.
Let us return to the story of our organic basket of
“natural” goodies. Brace yourself: Unlike the foods grown from genetically
modified seeds, in which scientists precisely modified one or two genes, then
tested the heck out of them for safety and allergenicity at a cost sometimes
reaching $250 million dollars, these foods were created by bombarding seeds
with radiation and corrosive chemicals to create tens of thousands of random
mutations. It took scientists 6 years and tens of thousands of failed random
experiments until they lucked upon the mutant mess that we now lovingly embrace
as juicy red grapefruits.
The process is called mutagenesis. Radiation breeding was
discovered in the 1920s, first using gamma rays and then X-rays. It often takes
place in laboratory Atomic gardens, and seeds have been sent into orbit in
order to expose them to more cosmic radiation. An array of chemical mutagents
has also been used, including Ethyl methanesulfonate and Dimethyl sulfate.
(Yummy!)
Have these lab-created mutants with tens of thousands of
untracked modified genes ever been tested? No. Are they labeled? No. In fact,
3,200 ornamental plants and common grains, fruits and vegetables created
through mutagenesis are eligible to be sold as organic.
Makes the Frankenstein argument sound kind of silly, yes?
Anti-GMO crusaders say you need at least a century of
testing to confirm that any lab induced food changes are safe. If their logic
has any validity—that precisely altering and tracking 1 or 2 genes (or no genes
in the case of the most modern genetic modification techniques like CRISPR and
gene editing) can have dangerous and unknown consequences—then you will surely
keel over dead from consuming organic Tuscan noodles. Do you really want to
risk turning yourself into a ticking time bomb by eating foods mutagenetically
created in breeding laboratories?
Maybe, just maybe, what you are hearing about GMOs and
food safety are not exactly accurate or in context.
GMOs=Evolution=Climate Change=Vaccine Safety
It is odd being asked to “defend” crop and animal
biotechnology. (As shorthand, I will use the term GMOs, representing
“genetically modified organisms,” although that’s a misleading acronym, as I’ll
later address). Few people except extremists like the Organic Consumers
Association are challenging the safety of more than 200 remarkably effective
and safe GMO drugs, including a breakthrough Ebola treatment developed by
genetically engineering a tobacco plant. The process to make them is identical,
so in a rational world, all the opponents GMO foods would be up in arms about
the use of GMO insulin, safely used for more than two decades now.
But food is viewed differently, perhaps because we engage
with it every day, multiple times a day. We are all experts about food, so we
think. This fact partly explains why when it comes to food, people get a wee
bit irrational. People may have more superstitions and taboos about food than
about practically anything else they experience.
Yes, there is a vigorous public discussion over GMOs.
Yes, the thought of tinkering with our food in a lab—unaccountable scientists
mixing steaming flasks—conjures up visions of soylent green and grotesque
deformities. Let us acknowledge it; no one wants “technology” for desert. The
thought of GMO foods is not appetizing!
We will return to that faux narrative later. But it is
important to settle the issue of whether GMOs are safe. It turns out that a
huge chasm separates the views of the average Joe and Jane from mainstream
scientists.
Simply said, mainstream science has reached the consensus
conclusion that GMOs are safe—at least as safe as conventional and organic
foods, and most likely safer. In sharp contrast to public opinion about GMO
safety, 89 percent of American scientists polled believe genetically modified
foods are safe.
That was the most eye-opening finding in a Pew Research
Center study on science literacy undertaken in cooperation with the American
Association for the Advancement of Science (AAAS), and released in January. The
survey represented a sample of 2,002 adult citizens and 3,748 scientists, all
members of the AAAS. In contrast, PEW found that some 57 percent of Americans
questioned the safety of GM foods, although the opinion of many of those
skeptics was very weak, and their understanding of what GMOS are was often thin
or wrong.
Startlingly, the overwhelming scientific consensus on GMO
safety exceeds the percentage of scientists, 88 percent, who believe humans are
driving climate change. And it is about equal to the percentage of mainstream
scientists convinced that humans are the product of evolution, rather than
Creation, and vaccines do not cause autism. Those conclusions all garner about
a 90 percent consensus.
Yes, you can find divided opinion among scientists on
each of those issues. One global warming denying website carries signatures
from 31,000 scientists who have signed an online petition saying there is “no
convincing evidence” that “humans can or will cause global warming.”
Anti-evolution ideologues boldly, if ignorantly, assert, “defenders of the
‘Evolutionary Consensus’ could benefit from more fact checking.”
Similarly, a fringe group of well-known campaigning
scientists and activists leaders known as the European Network of Scientists
for Social and Environmental Responsibility challenges the consensus on GM
technology. Gilles-Éric Séralini and his colleagues and allies lead ENSEER, as
it is called. Séralini’s discredited 2013 study attempting to link GM foods to
cancer in rats was retracted before being republished in an obscure
pay-for-play journal with no peer review.
“As scientists, physicians, academics, and experts from
disciplines relevant to the scientific, legal, social and safety assessment
aspects of genetically modified organisms (GMOs), we strongly reject claims by
GM seed developers and some scientists, commentators, and journalists that
there is a ‘scientific consensus’ on GMO safety,” ENSEER states on its website.
Its petition has a few hundred signatures, none from
prominent independent researchers. That is no surprise. The statement veers
sharply from mainstream science—independent academic and government researchers
with no ties to the biotechnology industry.
Global Consensus
on GMO Safety
More than 100 of the world’s independent science
organizations have endorsed the safety and sustainability of GM food
technology. And they did not just reach that conclusion out of a vacuum. A
meta-study of more than 1,700 peer-reviewed studies by independent Italian
university scientists found no evidence that GMO crops produce adverse affects
in humans or livestock. It is estimated that there have been more than 3,000
safety and environmental studies on GMOs, with more than two-thirds performed
by independent researchers.
It is this overwhelming evidence that has led to
consensus conclusions on GMO safety. Here are statements issued on both climate
change (CC) and GM technology by some of the most prominent global
organizations:
American Association for the Advancement of Science
CC: “The scientific evidence is clear: global climate
change caused by human activities is occurring now, and it is a growing threat
to society.” (2006)
GMOs: “The science is quite clear: crop improvement by
the modern molecular techniques of biotechnology is safe.” (2012)
National Academies of Science (USA)
CC: “The scientific understanding of climate change is
now sufficiently clear to justify taking steps to reduce the amount of
greenhouse gases in the atmosphere.” (2005)
GMOs: “Genetic Engineering … poses no health risks that
cannot also arise from conventional breeding and other methods used to create
new foods.” (2004); “An analysis of the US experience with genetically
engineered crops shows that they offer substantial net environmental and economic
benefits compared to conventional crops. … Generally, GE crops have had fewer
adverse effects on the environment than non-GE crops produced conventionally.”
(2010)
European Commission
CC: “There is unequivocal evidence that the Earth’s
climate is warming. … The consensus among climate experts is that it is
extremely unlikely that the main cause of recent warming is the ‘greenhouse
gases’ emitted by human activities.” (2012)
GMOs: “The main conclusion to be drawn from the efforts
of more than 130 research projects, covering a period of more than 25 years of
research and involving more than 500 independent research groups, is that
biotechnology, an in particular GMOs, are no more risky than conventional plant
breeding technologies.” (2010)
International Science Academies
CC: “Climate change is real. … It is likely that most of
the warming in recent decades can be attributed to human activities.” (2001)
GMOs: “GM technology has shown its potential to address
micro-nutrient deficiencies [in developing nations]. … GM technology, coupled
with important developments in other areas, should be used to increase the
production of main food staples, improve the efficiency of production, reduce
the environmental impact of agriculture, and provide access to food for
small-scale farmers.” (2001)
Consensus statements alone should not necessarily
convince skeptics. Experts can be wrong. (Anti-GMO campaigners like to claim
that American medical establishment widely endorsed the safety of cigarettes
into the 1960s, but that is a fabrication. There were official statements by
mainstream science groups citing adverse health effects dating to the 1920s.
And let us hope global science is a tad more sophisticated than it was a half
century ago.) Consensus statements are important, however, because they
represent the views of researchers familiar with the intricate science of
genetics and abreast with the latest research.
Can We Trust U.S. Scientists or Regulators?
One of the central claims of anti-GMO activists is that
you cannot trust claims that GMOs are safe because they are not aggressively
regulated. On its website, the Union of Concerned Scientists (UCS), whose anti-GMO
policy was crafted by Doug Gurian-Sherman, eased out of his position at UCS
last year, claims: “It is … an exaggeration … to state that there are no health
risks associated with GE. … not enough is known; research on the effects of
specific genes has been limited—and tightly controlled by the industry.”
That’s a familiar meme: invocation of the
industry-government axis. Consumer Reports crossed over from independent critic
to hard-edged activist on the GMO issue when it hired Michael Hansen, a dedicated
ideologue, as its senior scientist more than a decade ago. Like UCS and many
other advocacy NGOs, it attempts to sow doubt about the North American
regulatory structure.
“You may be surprised to know that the federal government
has not mandated that genetically modified organisms be proved safe before
they’re used in your food,” claims a recent CR blog post. Testing is
“voluntary,” they say, which means the public is not protected.
In fact, while the word “require” is not found in Food
and Drug Administration regulations, there is no question that it requires all
foods placed on the market in the United States to be safe. Violators are
subject to criminal penalties. The FDA relies on tests from submitters for all
foods, not just GMOs; this way, it is up to the submitter to pay for the proper
testing, which the FDA approves or disapproves, or sometimes asks for more
information.
In an interview with Nathanael Johnson of Grist, even
Hansen—one of the original signatures of the “no consensus” document circulated
by ENSEER—could not identify a single GMO submission that did not include
extensive safety data.
“Here’s the deal,” wrote Johnson in his excellent
multi-part series on GMOs that in a manner of months transformed the
environmental website Grist into a reliable resource for those seeking
independent analysis on this technology. “The process is technically voluntary,
but in practice, absolutely everyone does ‘volunteer.’ That’s because the FDA
can stop any food (GM or otherwise) from going to market. It would be
incredibly foolish for a company to spend a lot of money on a new breed of
plant while thumbing its nose at the agency.”
“To believe these claims, means you’re saying the
regulatory system is corrupt, and incapable of discerning science,” Bruce
Chassy, Professor Emeritus of Food Safety and Nutritional Sciences, Department
of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign
told me.
The conspiratorial mindset infects many anti-GMO critics.
They see a vast network of subterfuge: university scientists and regulators,
directed by the giant hand of Monsanto to “control” the world food supply.
Utterly absurd. For starters, Monsanto is not even that large; its annual
revenues are about on par with Whole Foods. It sells about one quarter of the
world’s seeds, with seeds being only a tiny fraction of the world food system.
This is the kind of black-hat view of the world that captures the imagination
of fevered teens. But the anti-GMO industry seems locked in perpetual adolescence.
GMO Regulations
Here is a more granular look at the regulatory
hurdles—far too high say many scientists, with barriers set up based more on
fear than promoting safety—for GMO crops in the United States.
Biotech crops go through rigorous testing for several
years before they are ever put on a farmer’s field. In the United States, there
are nine steps in the process that usually take 7 to 10 years to complete,
which is far more rigorous process than any conventionally derived food ever
goes through.
Any notion that conventional and organic foods are
automatically “safe” is a dangerous myth, as anyone familiar with the story of
the Lenape potato can attest. Conventionally developed in the 1960s for the
snack business, it made a damn fine potato chip. Unfortunately, it was kind of
toxic, and was withdrawn. This idea, perpetrated by activists, that GM plants
are uniquely at risk of producing unexpected side effects, is just plain wrong.
In fact, because of rigorous testing of GM crops, it is far more likely that an
allergenic or unintentionally toxic new conventional/organic food would get to
market than a GM variety—which is why many global science agencies contend that
GM crops are actually “safer” than their counterparts.
In the United States, the USDA/Animal and Plant Health
Inspection Service is responsible for ensuring that any released organisms are
safe and will not pose serious risks for the environment, whereas the EPA
evaluates the safety of transgenic plants containing potential allergens. They
consider where and how the protein is produced in the plant and its potential
to be toxic to humans and other organisms.
“Regulatory review from the USDA and the EPA is mandatory
in every sense—there’s nothing even legalistically voluntary about that,”
Johnson noted in Grist. All agricultural products must pass field-testing
required by the USDA, and allergen testing required by the EPA.
Before pesticides can be marketed, the EPA considers:
– Risks to humans
– Risks to non-target organisms and the environment
– Gene flow potential
– Insect resistance management plans
The EPA also requires certain tests to be conducted to
identify any risks to humans and the environment:
– Identification of new genetic material and all new
proteins
– Mammalian toxicity testing of all new proteins
– Comparison of new proteins to known toxins and
allergens
– Toxicity testing on birds, fish, earthworms, insects
such as bees, ladybird beetles, and lacewings
– Toxicity testing on insects related to target insect
pests
– Length of time required for the new proteins to degrade
in the environment
The development of a transgenic plant requires
researchers to meet with one or more regulatory agency (EPA, USDA/APHIS, or
FDA) to discuss the outline of the projects and decide which studies will be
necessary to ensure safety of the end product. Throughout the study the
developer sends the data of the ongoing research to the appropriate agency.
For many biotech crops, the product then goes through a
deregulation process in which the USDA/APHIS reviews the data received from the
developer and decides whether or not the transgenic plant causes a negative
outcome in the environment by genetically crossing with native species or
out-competing them. They also try to ensure that the transgenic plant does not
have any negative effects on wildlife, and does not become a “super-weed.” The
overall goal of the regulatory agencies is to ensure that biotech crops are as
safe as their non-genetically modified counterparts.
Long-Term Studies?
What about the claim made by organic activist scientist
Charles Benbrook and repeated endlessly by anti-GMO activists that there have
been few or no long-term studies? That’s false. The independent database
GENERA, set up at the University of Wisconsin, lists more than three-dozen
examples of multi-year studies showing no unusual health consequences from
consuming GMOs.
A recent updated review published in December 2013 of 33
studies—17 long-term and 16 multigenerational studies—by a team of scientists
including Chelsea Snell and Agnès Ricroch found, “Results … do not suggest any
health hazards … and there were no statistically significant differences within
parameters observed.”
And a recent review of 29 years of livestock health and
productivity statistics published in the Journal of Animal Science—looking at
relevant data from both before and after the introduction of genetically
engineered feed and covering more than one billion animals—concluded that GM
feed is every bit as safe and nutritious as non-GM.
The data review, overseen by University of
California-Davis geneticist Alison Van Eenennaam, is unusual because of the
vast trove of records examined. No, they were not just “industry data,” but
mostly records provided by farmers and the U.S. government.
Van Eenennaam reviewed heath parameters including somatic
cell count (SCC—an indicator of mastitis and inflammation in the udder) and pre
and post mortem condemnation records in cattle, as ill cattle cannot be
approved for meat, as well as mortality in the poultry industry.
“It should be noted that if animals are sick they do not
grow well, and growth rates have not be affected by GMO feed,” Van Eenennaam
told me.
The paper also summarized the results of two thorough
multigenerational studies that examined the long-term effects of feeding a GMO
corn variety to food-producing animals, specifically, a German study in dairy
cattle and an Irish study in pigs that included several papers looking
specifically at health indicators. These independent studies were notable in
that they included appropriate control animals consuming isogenic non-GE lines
of corn, and both comprehensively examined a range of phenotypes and indicators
of health using sophisticated techniques including histopathology and
hematological analyses. These papers found that transgenerational consumption
of these GMO corn diets was not detrimental to animal health.
But “It is not a controlled study,” claim critics. Of
course not. It is impossible and unethical to do a three-decade study, on
animals, let alone on humans. It’s also useless; those who claim that there are
no “long term” studies on GMOs (not true; there have been dozens) and then
object when three decades of data do not confirm their prejudices are apt to
get belligerent.
It should be underscored that animal feeding studies are
the basis for evaluating the safety of GMO crops. The data also show that GM
feed is safe and nutritionally equivalent to non-GMO feed. There was no
evidence of any health risk to the animals and no evidence to suggest any health
effect on humans who eat those animals.
The practical fact is that after 30 years of experience
using GM crops as animal feed—and for the record, even anti-GMO Europe uses GMO
feed—there is not one documented case of any health problems. Invoking the “precautionary
principle” and claims of possible future unknowns or unintended consequences
are nothing more than ideologically fashionable ways of playing the fear card.
Have there been a few studies of lab animals that hint at
the potential for potential problems? Absolutely. But they number a few dozen
at most, set against thousands that have found no adverse issues.
One animal GMO corn-glyphosate study by Séralini garnered
wide attention with pictures of grotesquely distorted rats, but it was
retracted because of its many methodological flaws and misleading conclusions,
after which it was republished without peer review. But think about it: If his
data were credible and 80 percent of food in the United States was poison, his
sure-to-be Nobel Prize winning paper documenting this horror would not have had
to be published in the Environmental Sciences Europe—an obscure ‘pay for play’
journal with zero gravitas. Good journals would not, did not, accept the
tortured statistics, missing controls and over-interpretation of limited data;
Seralini had no place else to go literally except to buy his way into a dicey
publication.
There is not one example in the publishing record of a
study purporting to find health or safety dangers originating from GM foods
that has been replicated in an independent, peer-reviewed journal. Not one.
In the absence of serious GMO safety concerns, activists
and fellow traveler skeptics in the “liberal” community are reduced to raising
side issues, such as blaming biotech crops (read: Monsanto) for the rise of
so-called “superweeds.” Invoking Little Shop of Horrors imagery, they claim
that the use of glyphosate—an extremely mild pesticide that homeowners can buy
at one’s local Do It Center—paired with GMO seeds is courting ecological disaster.
Anyone writing that is not a farmer or geneticist. Glyphosate preceded the GMO
revolution by 15 years and has led to a dramatic reduction in toxic spraying
per acre.
But what about “superweeds”? Let’s dump the scare jargon:
superweeds are not ‘super’ in any real sense of the word; they are just weeds
that have evolved to evade a particular weed management strategy. If you have
ever seen a dandelion so short that it has almost no stem, you have seen a
superweed. That dandelion’s super power is crouching down, so that lawnmowers
cannot get it before it goes to seed.
Crop losses before harvesting average 35 percent
worldwide currently. What would those losses be without pesticides like
glyphosate? More like 70 percent, say agricultural experts.
Periodic resistance to pesticides has been growing for
about 40 years—in parallel with the rise of large-scale farming, both
conventional and organic. Let’s keep this in context: there are 150 weeds
overall that resist some kind of herbicide; one, and far down the list of
risky, is glyphosate. It has become the bogeyman for those with no working
knowledge of agriculture who want to flog GMOs by proxy.
Will There Be Next Steps in the GMO Revolution?
As I hope I have made clear throughout, the concept of
GMOs as a “category” of food to be embraced or rejected, in whole or in part,
is silly from a science point of view. I used the term “GMOs” throughout this
essay as a concession to the popular vernacular, but the term is both
meaningless and misleading. GM is a process. Each GM crop is unique.
There exists a range of viewpoints about whether genetic
engineering promotes deleterious farming and ecological practices—the so-called
dangers of corporate controlled industrial agriculture; or the over-production
of commodity crops that some say contribute to our collective weight problem.
Those are important issues; they just don’t apply specifically to GMOs.
The central issue that you must assess is the safety of
GMO foods. In evaluating GMOs, we need to focus not just on evidence in any one
study, but also on the mounds of accumulated evidence and the process of
science:
•
Reproducibility of studies
• Skepticism of
one-off research
• Weight of
evidence
• Willingness to
revise theories in the light of new, reproducible data
In that context, many of those who maintain that GMOs are
potentially harmful, while sincere for the most part, are engaging not in
science but in politics. Let me give you an example. Anti-GMO NGOs often claim
that the safety of genetically engineered foods cannot be assured because Big
Ag funds most GMO research and there have been almost no long-term safety
studies.
I fear inquisitive consumers who read attacks on GMOs and
believe this will be left feeling scared, mistrustful and conflicted about our
farmers and food system. Vigorous debate over the future of food is healthy,
but this obsession with GMOs has driven reasonable discourse into the ditch.
The world economy hinges on innovation. Regulation that
prevents The Next Big Thing is truly a lost opportunity—many once-touted
biotech innovations have been killed in the crib by over-regulation: Triffid
flax, NewLeaf Potatoes and almost the entire field of transgenic
animals—possibly even AquaBounty’s GE salmon, which languishes in regulatory
no-man’s land because of political intervention from the White House.
No longer can we expect breakthroughs in GE biorational
pesticides, microorganisms to clean up toxic spills or transgenic animals.
Do we want to continue to thwart startups or university
research projects? Or should we link science to regulatory sanity and revise
the approval process to reflect what we have learned over decades of research
and years of experience and trillions of meals?
Used appropriately, genetic engineering is a fantastic
tool—to create new life-saving drugs and encourage cutting edge ecologically
based farming technique. We must increase food output to meet a burgeoning
world population that is also becoming more affluent. No tools in our toolbox
should go to waste.
In a recent TED Talk, Professor Ronald summed up the
crisis before us quite cogently: “What scares me most about the loud arguments
on plant and animal genetics and the spread of misinformation and the
demonization and fear campaigns is that the poorest people, who need the technology
the most, might be denied access to modern scientific innovations because of
the vague fears and prejudices of those who are privileged to have enough to
eat.”
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