Skip Navigation

Cancer agency left in the dark over glyphosate evidence

June 14, 2017
By Kate Kelland

Reuters has recently uncovered evidence a study by a World Health Organization concluding the popular herbicide Roundup is a probable carcinogen is wrong.

The International Agency for Research on Cancer (IARC), a division of the world health organization, declared glyphosate (Roundup) a probable carcinogen in December 2015. A recent investigation by Reuters revealed Aaron Blair, Ph.D., chair of the IARC review panel on glyphosate, withheld evidence from a large study which indicating Roundup does not cause cancer. Blair was a co-author of the unpublished Agricultural Health Study (AHS), administered by the U.S. National Cancer Institute. Court documents in one of the ongoing legal cases against Monsanto obtained by Reuters shows Blair knew the unpublished research found no evidence of a link between glyphosate and cancer. The documents include a sworn deposition by Blair given in March 2017 in which Blair admitted the data would have altered IARC’s analysis, making it less likely that glyphosate would meet the agency’s criteria for being classed as “probably carcinogenic.”