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Glyphosate Exposure Increases Cancer Risk Up to 41%, Study Finds
Glyphosate, the active ingredient in Roundup, is the world's most widely used weedkiller and has been surrounded by controversy ever since the International Agency for Research on Cancer classified it as "probably carcinogenic to humans" in 2015.
The latest paper is a comprehensive review of epidemiologic studies published between 2001 and 2018, including last year's large Agricultural Health Study that tracked the health of tens of thousands of agricultural workers and determined no firm association between exposure to the pesticide and cancer, including NHL, as Reuters reported then.
Even with the Agricultural Health Study's assessment, the authors of the new paper still found "a compelling link" between glyphosate exposure and an increased risk of non-Hodgkin lymphoma, and makes an even stronger case of the link compared to previous reports.
For each study that was reviewed, the researchers focused on the groups that were the most highly exposed to the chemical.
"This research provides the most up-to-date analysis of glyphosate and its link with non-Hodgkin lymphoma, incorporating a 2018 study of more than 54,000 people who work as licensed pesticide applicators," study co-author Rachel Shaffer, a University of Washington doctoral student in the Department of Environmental & Occupational Health Sciences, in a press release.
She added their findings aligned with the classification from the International Agency for Research on Cancer.
The meta-analysis was published this week in the journal Mutation Research/Reviews in Mutation Research, whose editor-in-chief is U.S. Environmental Protection Agency (EPA) genetic toxicologist David DeMarini, GM Watch noted.
"Overall, in accordance with evidence from experimental animal and mechanistic studies, our current meta-analysis of human epidemiological studies suggests a compelling link between exposures to GBHs [glyphosate-based herbicides] and increased risk for NHL," the study states.
This conclusion contradicts the results of previous scientific assessments and international governmental bodies, including the EPA, which declared in 2017 that the controversial chemical is "not likely to be carcinogenic to humans."
Pharmaceutical giant Bayer—which bought glyphosate-maker Monsanto—has adamantly rejected any cancer claims and said the new study is "flawed" and uses "cherry-picked data" in a statement to Carey Gillam, a journalist and researcher for US Right to Know, who wrote about the new findings in the Guardian.
Bayer is facing more than 9,000 U.S. lawsuits from people who believe the chemical causes NHL.
The research was conducted by scientists from the University of Washington, the University of California, Berkeley and the Icahn School of Medicine at Mount Sinai, New York.
As noted by GM Watch, three of the five researchers are part of an EPA scientific advisory panel on glyphosate and have publicly stated that the agency failed to follow proper scientific procedures in determining the herbicide has no link to cancer.
Senior author Lianne Sheppard, a professor in the UW departments of Environmental & Occupational Health Sciences and Biostatistics, told the Guardian that the EPA evaluation is wrong.
"It was pretty obvious they didn't follow their own rules," she said to the publication. "Is there evidence that it is carcinogenic? The answer is yes."
In a comment to the Guardian, an EPA spokesperson said: "We are reviewing the study."
Funding for the new study was provided by the National Institutes of Environmental Health Sciences and the University of Washington Retirement Association Aging Fellowship.
"Our analysis focused on providing the best possible answer to the question of whether or not glyphosate is carcinogenic," Sheppard said in the press release. "As a result of this research, I am even more convinced that it is."
EcoWatch Daily Newsletter
By Melissa Kravitz
Can't stop eating that bag of chips until you're licking the salt nestled in the corners of the empty package from your fingers? You're not alone. And it's not entirely your fault that the intended final handful of chips was not, indeed, your last for that snacking session. Many common snack foods have been expertly engineered to keep us addicted, almost constantly craving more of whatever falsely satisfying manufactured treat is in front of us.
By Kim Knowlton
A new paper just out in The Lancet Planetary Health provides the first global indication that recent temperature increases, propelled by climate change, are in fact contributing significantly to longer and more intense pollen seasons.
EcoWatch is pleased to announce its second photo contest! Earth Day is happening on April 22nd, and this year's theme is "Protect Our Species." With that in mind, we want EcoWatchers to show us your photographs of creatures that inhabit Earth. Send us your best photos of species you value.
By Julia Conley
In propping up the coal industry, the Trump administration is not only contributing to dangerous pollution, fossil fuel emissions and the climate crisis, it is also now clinging to a far more expensive energy production model than renewable energy offers.
That's according to a new report from renewable energy analysis firm Energy Innovation, showing that about three-quarters of power produced by the nation's remaining coal plants is more expensive for American households than renewables including wind, solar and hydro power.
At least 19 people have died and more than 100 have been injured in flash flooding in the south of Iran, the country's semi-official Tasnim News Agency said. The city of Shiraz in Fars province was the worst hit by the flooding, which occurred after a month's worth of rain fell in a few hours, CNN meteorologist Taylor Ward said.
Climate change is having a grizzly effect on Mount Everest as melting snow and glaciers reveal some of the bodies of climbers who died trying to scale the world's highest peak.
The Navajo Nation has decided to stop pursuing the acquisition of a beleaguered coal-fired power plant in Arizona, locking in the plant to be taken offline and its associated coal mine to close later this year.
A Navajo Nation Council committee voted 11-9 last week to stop pursuing the purchase of the 2,250-megawatt Navajo Generating Station, which with the Kayenta coal mine provides more than 800 jobs to primarily Navajo and Hopi workers as well as tribal royalties.
A coalition of utilities that own the plant said in 2017 it would cease operations due to increased economic pressure, and the plant's future has proved a flash point for national and regional energy policy and raised larger questions on how Native communities will handle ties to fossil fuel industries as the economy changes.
For a deeper dive: