A new analysis from the journal Environmental Sciences Europe has shown the “diametrically different approaches”1 the EPA and WHO used to determine the cancer risk from exposure to the main ingredient in Monsanto’s weedkiller, glyphosate.

According to the report, the EPA:

  • ignored a large number of peer-reviewed independent studies linking glyphosate to cancer in humans
  • used research paid for by Monsanto to support their position that glyphosate is not carcinogenic

However, in 2015, the WHO’s International Agency for Research on Cancer (IARC)– “after reviewing extensive U.S., Canadian and Swedish epidemiological studies on glyphosate’s human health effects and research on laboratory animals”2 – classified the chemical as ‘probably carcinogenic to humans.’


Charles Benbrook, Ph.D., author of the new study, said the “IARC’s evaluation relied heavily on studies” that showed data on “real-world exposures and genotoxicity risk in exposed human populations”3while the EPA relied heavily on studies paid for by Monsanto and other Big Ag/Chem companies and ignored “the large and growing body of independent research connecting the chemical with genotoxicity.”4 (The damaging effect a chemical can have on DNA which then triggers the mutations that can lead to cancer.)


IARC scientists looked at 118 different finding strong evidence that glyphosate may cause genotoxicity whereas the EPA included fewer than half of these studies. And since that initial IARC assessment, an additional 26 of 27 published studies have shown evidence that glyphosate can be genotoxic. 

Olga Naidenko, Ph.D., senior science advisor for children’s environmental health at EWG said, “Allowing a company like Monsanto, with a long and damaging history of deception, to influence the EPA’s assessment of its own product is outrageous.”5

We couldn’t agree more.


To date, more than 225,000 people have signed a petition from EWG and Just Label It calling on General Mills, Quaker and Kellogg’s to get glyphosate out of their products. We stand with them.



  1. EWG
  2. EWG
  3. EWG
  4. EWG
  5. EWG