Myth: “There is research that links glyphosate and breast cancer”

Myth: “There is research that links glyphosate and breast cancer”

 

Fact: Counter to the findings in this one study, glyphosate does not have estrogenic activity. In fact, the results of this study contradict what is widely established about glyphosate: that it is not an endocrine active compound, an estrogen receptor agonist or carcinogenic. Glyphosate was recently screened in the Environmental Protection Agency’s Tier 1 screening battery under the Endocrine Disruptor Screening Program, and, based on the results of the validated EDSP Tier 1 assays, glyphosate did not have estrogenic activity. Additionally, numerous studies in the literature clearly demonstrate that glyphosate is not an estrogen receptor agonist. Williams et al. (2012) performed an analysis of the available literature to assess the developmental and reproductive safety of glyphosate and concluded that “the literature shows no solid evidence linking glyphosate exposure to adverse developmental or reproductive effects at environmentally realistic exposure concentrations.” This includes several studies showing that “glyphosate did not demonstrate estrogenic activity.” If you’re interested, you can access this analysis here: http://www.tandfonline.com/doi/abs/10.1080/10937404.2012.632361#.VTauliFVhHw.

by John Swarthout, Ph.D., Scientific Outreach and Issues Management Lead, Monsanto Company