New FDA Report on Pesticides in Fruits and Vegetables Adds to Growing Public Health Concerns
By Carey Gillam
Last month the Food & Drug Administration published its latest annual analysis of the levels of pesticide residues that contaminate the fruits and veggies and other foods we Americans routinely put on our dinner plates. The fresh data adds to growing consumer concern and scientific debate over how pesticide residues in food may contribute – or not – to illness, disease and reproductive problems.
Over 55 pages of data, charts and graphs, the FDA's "Pesticide Residue Monitoring Program" report also provides a rather unappetizing example of the degree to which U.S. farmers have come to rely on synthetic insecticides, fungicides and herbicides in growing our food.
We learn, for instance, in reading the latest report, that traces of pesticides were found in 84 percent of domestic samples of fruits, and 53 percent of vegetables, as well as 42 percent of grains and 73 percent of food samples simply listed as "other." The samples were drawn from around the country, including from California, Texas, Kansas, New York and Wisconsin.
Roughly 94 percent of grapes, grape juice and raisins tested positive for pesticide residues as did 99 percent of strawberries, 88 percent of apples and apple juice, and 33 percent of rice products, according to the FDA data.
Imported fruits and vegetables actually showed a lower prevalence of pesticides, with 52 percent of fruits and 46 percent of vegetables from abroad testing positive for pesticides. Those samples came from more than 40 countries, including Mexico, China, India and Canada.
We also learn that for the most recently reported sampling, among the hundreds of different pesticides, the FDA found traces of the long-banned insecticide DDT in food samples, as well as chlorpyrifos, 2,4-D and glyphosate. DDT is linked to breast cancer, infertility and miscarriage, while chlorpyrifos – another insecticide – has been scientifically shown to cause neurodevelopmental problems in young children.
Chlorpyrifos is so dangerous that the European Food Safety Authority has recommended a ban of the chemical in Europe, finding that there is no safe exposure level. The herbicides 2,4-D and glyphosate are both linked to cancers and other health problems as well.
Thailand recently said it was banning glyphosate and chlorpyrifos due to the scientifically established risks of these pesticides.
Despite the prevalence of pesticides found in U.S. foods, the FDA, along with the U.S. Environmental Protection Agency (EPA) and the U.S. Department of Agriculture (USDA), assert that pesticide residues in food are really nothing to worry about. Amid heavy lobbying by the agrichemical industry the EPA has actually supported continued use of glyphosate and chlorpyrifos in food production.
The regulators echo the words of Monsanto executives and others in the chemical industry by insisting that pesticide residues pose no threat to human health as long as the levels of each type of residue falls under a "tolerance" level set by the EPA.
In the most recent FDA analysis, only 3.8 percent of domestic foods had residue levels that were considered illegally high, or "violative." For imported foods, 10.4 percent of the foods sampled were violative, according to the FDA.
What the FDA did not say, and what regulatory agencies routinely avoid saying publicly, is that the tolerance levels for certain pesticides have risen over the years as the companies that sell the pesticides request higher and higher legal limits. The EPA has approved several increases allowed for glyphosate residues in food, for instance. As well, the agency often makes the determination that it need not comply with a legal requirement that states the EPA "shall apply an additional tenfold margin of safety for infants and children" in setting the legal levels for pesticide residues. The EPA has overridden that requirement in the setting of many pesticide tolerances, saying no such extra margin of safety is needed to protect children.
The bottom line: The higher the EPA sets the "tolerance" allowed as the legal limit, the lower the possibility that regulators will have to report "violative" residues in our food. As a result, the U.S. routinely allows higher levels of pesticide residues in food than other developed nations. For example, the legal limit for the weed killer glyphosate on an apple is 0.2 parts per million (ppm) in the U.S. but only half that level – 0.1 ppm – is allowed on an apple in the European Union. As well, the U.S. allows residues of glyphosate on corn at 5 ppm, while the EU allows only 1 ppm.
As legal limits rise for pesticide residues in food, many scientists have been increasingly raising alarms about the risks of regular consumption of the residues, and the lack of regulatory consideration of the potential cumulative impacts of consuming an array of bug and weed killers with every meal.
A team of Harvard scientists are calling for in-depth research about potential links between disease and consumption of pesticide as they estimate that more than 90 percent of people in the U.S. have pesticide residues in their urine and blood due to consumption of pesticide-laced foods. A study connected to Harvard found that dietary pesticide exposure within a "typical" range was associated both with problems women had getting pregnant and delivering live babies.
Additional studies have found other health problems tied to dietary exposures to pesticides, including to glyphosate. Glyphosate is the most widely used herbicide in the world and is the active ingredient in Monsanto's branded Roundup and other weed killing products.
Pesticide Industry Push Back
But as the concerns mount, agrichemical industry allies are pushing back. This month a group of three researchers with long-standing close ties to the companies that sell agricultural pesticides released a report seeking to soothe consumer worries and discount the scientific research.
The report, which was issued Oct. 21, stated that "there is no direct scientific or medical evidence indicating that typical exposure of consumers to pesticide residues poses any health risk. Pesticide residue data and exposure estimates typically demonstrate that food consumers are exposed to levels of pesticide residues that are several orders of magnitude below those of potential health concern."
Not surprisingly, the three authors of the report are closely tied to the agrichemical industry. One of the report's authors is Steve Savage, an agrichemical industry consultant and former DuPont employee. Another is Carol Burns, a former scientist for Dow Chemical and current consultant for Cortevia Agriscience, a spin-off of DowDuPont. The third author is Carl Winter, chair of the Department of Food Science and Technology at the University of California at Davis. The university has received approximately $2 million a year from the agrichemical industry, according to a university researcher, though the accuracy of that figure has not been established.
The authors took their report directly to Congress, holding three different presentations in Washington, DC, designed to promote their message of pesticide safety for use in "media food safety stories, and consumer advice regarding which foods consumers should (or should not) consume."
The pro-pesticide sessions were held at the office buildings for members of Congress and, appropriately it seems, at the headquarters for CropLife America, the lobbyist for the agrichemical industry.
Reposted with permission from our media associate U.S. Right to Know.
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By Dana M Bergstrom, Euan Ritchie, Lesley Hughes and Michael Depledge
In 1992, 1,700 scientists warned that human beings and the natural world were "on a collision course." Seventeen years later, scientists described planetary boundaries within which humans and other life could have a "safe space to operate." These are environmental thresholds, such as the amount of carbon dioxide in the atmosphere and changes in land use.
The Good and Bad News<p><span>Ecosystems consist of living and non-living components, and their interactions. They work like a super-complex engine: when some components are removed or stop working, knock-on consequences can lead to system failure.</span></p><p>Our study is based on measured data and observations, not modeling or predictions for the future. Encouragingly, not all ecosystems we examined have collapsed across their entire range. We still have, for instance, some intact reefs on the Great Barrier Reef, especially in deeper waters. And northern Australia has some of the most intact and least-modified stretches of savanna woodlands on Earth.</p><p><span>Still, collapses are happening, including in regions critical for growing food. This includes the </span><a href="https://www.mdba.gov.au/importance-murray-darling-basin/where-basin" target="_blank" rel="noopener noreferrer">Murray-Darling Basin</a><span>, which covers around 14% of Australia's landmass. Its rivers and other freshwater systems support more than </span><a href="https://www.abs.gov.au/ausstats/[email protected]/latestproducts/94F2007584736094CA2574A50014B1B6?opendocument" target="_blank" rel="noopener noreferrer">30% of Australia's food</a><span> production.</span></p><p><span></span><span>The effects of floods, fires, heatwaves and storms do not stop at farm gates; they're felt equally in agricultural areas and natural ecosystems. We shouldn't forget how towns ran out of </span><a href="https://www.mdba.gov.au/issues-murray-darling-basin/drought#effects" target="_blank" rel="noopener noreferrer">drinking water</a><span> during the recent drought.</span></p><p><span></span><span>Drinking water is also at risk when ecosystems collapse in our water catchments. In Victoria, for example, the degradation of giant </span><a href="https://theconversation.com/logging-must-stop-in-melbournes-biggest-water-supply-catchment-106922" target="_blank" rel="noopener noreferrer">Mountain Ash forests</a><span> greatly reduces the amount of water flowing through the Thompson catchment, threatening nearly five million people's drinking water in Melbourne.</span></p><p>This is a dire <em data-redactor-tag="em">wake-up</em> call — not just a <em data-redactor-tag="em">warning</em>. Put bluntly, current changes across the continent, and their potential outcomes, pose an existential threat to our survival, and other life we share environments with.</p><p><span>In investigating patterns of collapse, we found most ecosystems experience multiple, concurrent pressures from both global climate change and regional human impacts (such as land clearing). Pressures are often </span><a href="https://besjournals.onlinelibrary.wiley.com/doi/abs/10.1111/1365-2664.13427" target="_blank" rel="noopener noreferrer">additive and extreme</a><span>.</span></p><p>Take the last 11 years in Western Australia as an example.</p><p>In the summer of 2010 and 2011, a <a href="https://theconversation.com/marine-heatwaves-are-getting-hotter-lasting-longer-and-doing-more-damage-95637" target="_blank" rel="noopener noreferrer">heatwave</a> spanning more than 300,000 square kilometers ravaged both marine and land ecosystems. The extreme heat devastated forests and woodlands, kelp forests, seagrass meadows and coral reefs. This catastrophe was followed by two cyclones.</p><p>A record-breaking, marine heatwave in late 2019 dealt a further blow. And another marine heatwave is predicted for <a href="https://www.theguardian.com/environment/2020/dec/24/wa-coastline-facing-marine-heatwave-in-early-2021-csiro-predicts" target="_blank" rel="noopener noreferrer">this April</a>.</p>
What to Do About It?<p><span>Our brains trust comprises 38 experts from 21 universities, CSIRO and the federal Department of Agriculture Water and Environment. Beyond quantifying and reporting more doom and gloom, we asked the question: what can be done?</span></p><p>We devised a simple but tractable scheme called the 3As:</p><ul><li>Awareness of what is important</li><li>Anticipation of what is coming down the line</li><li>Action to stop the pressures or deal with impacts.</li></ul><p>In our paper, we identify positive actions to help protect or restore ecosystems. Many are already happening. In some cases, ecosystems might be better left to recover by themselves, such as coral after a cyclone.</p><p>In other cases, active human intervention will be required – for example, placing artificial nesting boxes for Carnaby's black cockatoos in areas where old trees have been <a href="https://www.environment.gov.au/biodiversity/threatened/publications/factsheet-carnabys-black-cockatoo-calyptorhynchus-latirostris" target="_blank" rel="noopener noreferrer">removed</a>.</p><p><span>"Future-ready" actions are also vital. This includes reinstating </span><a href="https://www.abc.net.au/gardening/factsheets/a-burning-question-fire/12395700" target="_blank" rel="noopener noreferrer">cultural burning practices</a><span>, which have </span><a href="https://theconversation.com/australia-you-have-unfinished-business-its-time-to-let-our-fire-people-care-for-this-land-135196" target="_blank" rel="noopener noreferrer">multiple values and benefits for Aboriginal communities</a><span> and can help minimize the risk and strength of bushfires.</span></p><p>It might also include replanting banks along the Murray River with species better suited to <a href="https://www.abc.net.au/gardening/factsheets/my-garden-path---matt-hansen/12322978" target="_blank" rel="noopener noreferrer">warmer conditions</a>.</p><p>Some actions may be small and localized, but have substantial positive benefits.</p><p>For example, billions of migrating Bogong moths, the main summer food for critically endangered mountain pygmy possums, have not arrived in their typical numbers in Australian alpine regions in recent years. This was further exacerbated by the <a href="https://theconversation.com/six-million-hectares-of-threatened-species-habitat-up-in-smoke-129438" target="_blank" rel="noopener noreferrer">2019-20</a> fires. Brilliantly, <a href="https://www.zoo.org.au/" target="_blank" rel="noopener noreferrer">Zoos Victoria</a> anticipated this pressure and developed supplementary food — <a href="https://theconversation.com/looks-like-an-anzac-biscuit-tastes-like-a-protein-bar-bogong-bikkies-help-mountain-pygmy-possums-after-fire-131045" target="_blank" rel="noopener noreferrer">Bogong bikkies</a>.</p><p><span>Other more challenging, global or large-scale actions must address the </span><a href="https://www.youtube.com/watch?v=iICpI9H0GkU&t=34s" target="_blank" rel="noopener noreferrer">root cause of environmental threats</a><span>, such as </span><a href="https://www.nature.com/articles/s41559-018-0504-8" target="_blank" rel="noopener noreferrer">human population growth and per-capita consumption</a><span> of environmental resources.</span><br></p><p>We must rapidly reduce greenhouse gas emissions to net-zero, remove or suppress invasive species such as <a href="https://onlinelibrary.wiley.com/doi/abs/10.1111/mam.12080" target="_blank" rel="noopener noreferrer">feral cats</a> and <a href="https://theconversation.com/the-buffel-kerfuffle-how-one-species-quietly-destroys-native-wildlife-and-cultural-sites-in-arid-australia-149456" target="_blank" rel="noopener noreferrer">buffel grass</a>, and stop widespread <a href="https://theconversation.com/to-reduce-fire-risk-and-meet-climate-targets-over-300-scientists-call-for-stronger-land-clearing-laws-113172" target="_blank" rel="noopener noreferrer">land clearing</a> and other forms of habitat destruction.</p>
Our Lives Depend On It<p>The multiple ecosystem collapses we have documented in Australia are a harbinger for <a href="https://www.iucn.org/news/protected-areas/202102/natures-future-our-future-world-speaks" target="_blank">environments globally</a>.</p><p>The simplicity of the 3As is to show people <em>can</em> do something positive, either at the local level of a landcare group, or at the level of government departments and conservation agencies.</p><p>Our lives and those of our <a href="https://theconversation.com/children-are-our-future-and-the-planets-heres-how-you-can-teach-them-to-take-care-of-it-113759" target="_blank">children</a>, as well as our <a href="https://theconversation.com/taking-care-of-business-the-private-sector-is-waking-up-to-natures-value-153786" target="_blank" rel="noopener noreferrer">economies</a>, societies and <a href="https://theconversation.com/to-address-the-ecological-crisis-aboriginal-peoples-must-be-restored-as-custodians-of-country-108594" target="_blank" rel="noopener noreferrer">cultures</a>, depend on it.</p><p>We simply cannot afford any further delay.</p><p><em><a rel="noopener noreferrer" href="https://theconversation.com/profiles/dana-m-bergstrom-1008495" target="_blank" style="">Dana M Bergstrom</a> is a principal research scientist at the University of Wollongong. <a rel="noopener noreferrer" href="https://theconversation.com/profiles/euan-ritchie-735" target="_blank" style="">Euan Ritchie</a> is a professor in Wildlife Ecology and Conservation, Centre for Integrative Ecology, School of Life & Environmental Sciences at Deakin University. <a rel="noopener noreferrer" href="https://theconversation.com/profiles/lesley-hughes-5823" target="_blank">Lesley Hughes</a> is a professor at the Department of Biological Sciences at Macquarie University. <a rel="noopener noreferrer" href="https://theconversation.com/profiles/michael-depledge-114659" target="_blank">Michael Depledge</a> is a professor and chair, Environment and Human Health, at the University of Exeter. </em></p><p><em>Disclosure statements: Dana Bergstrom works for the Australian Antarctic Division and is a Visiting Fellow at the University of Wollongong. Her research including fieldwork on Macquarie Island and in Antarctica was supported by the Australian Antarctic Division.</em></p><p><em>Euan Ritchie receives funding from the Australian Research Council, The Australia and Pacific Science Foundation, Australian Geographic, Parks Victoria, Department of Environment, Land, Water and Planning, and the Bushfire and Natural Hazards CRC. Euan Ritchie is a Director (Media Working Group) of the Ecological Society of Australia, and a member of the Australian Mammal Society.</em></p><p><em>Lesley Hughes receives funding from the Australian Research Council. She is a Councillor with the Climate Council of Australia, a member of the Wentworth Group of Concerned Scientists and a Director of WWF-Australia.</em></p><p><em>Michael Depledge does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.</em></p><p><em>Reposted with permission from <a href="https://theconversation.com/existential-threat-to-our-survival-see-the-19-australian-ecosystems-already-collapsing-154077" target="_blank" style="">The Conversation</a>. </em></p>
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