2014 Roundup Cancer Study Links Glyphosate to Non-Hodgkin Lymphoma
Over the last 30 years, there has been an increase in reported cases of non-Hodgkin lymphoma, according to a major scientific review published in 2014. The study suggests that chemical pesticides and herbicides—particularly glyphosate, the active ingredient in Roundup weed killer—are a major contributing factor to the rising number of non-Hodgkin lymphoma cases.
The Roundup cancer study, titled, “Non-Hodgkin Lymphoma and Occupational Exposure to Agricultural Pesticide Chemical Groups and Active Ingredients: A Systematic Review and Meta-Analysis, was published in the International Journal of Environmental Research and Public Health. The paper focused on reviews and meta-analyses of nearly 30 years worth of epidemiological research examining the link between non-Hodgkin lymphoma and occupational exposure to 80 pesticide active ingredients and 21 chemical groups. The study notes that pesticides are often grouped according to the type of pests that they control; for example, fungicides are used to kill fungi, insecticides to kill insects, and herbicides to kill weeds and plants.
The 2014 glyphosate cancer study attempted to reconcile an apparent trend among farm workers who have low mortality rates but high reported incidents of cancer. Researchers believe that exposure to Roundup may best explain this contradiction, as the Roundup cancer study found that being exposed to glyphosate doubled an individual’s risk of developing non-Hodgkin lymphoma.
Aside from demonstrating that pesticide exposure in occupational agricultural settings is an important determinant of non-Hodgkin lymphoma, the study also found that glyphosate exposure was linked to a common non-Hodgkin lymphoma subtype, B-cell lymphoma.