Glyphosate, the active ingredient in Monsanto's Roundup herbicide, has been the focus of increasing scrutiny after the International Agency for Research on Cancer (IARC) determined it to be a probable human carcinogen.
Yet, glyphosate is not the only ingredient in Roundup and other glyphosate-based products, nor is it the only potentially toxic ingredient.
The formulation includes a number of so-called inert ingredients as well, and these have largely evaded scrutiny because they were concealed as proprietary "trade secrets."
Monsanto is now facing multiple lawsuits from
people who developed non-Hodgkin lymphoma after using Roundup. The suits allege that glyphosate, along with the product's inert ingredients are to blame, and in fact that the
mixture of chemicals together is far more dangerous than glyphosate alone.According to the Intercept, one of the lawsuits states, "Monsanto 'knew or should have known that
Roundup is more toxic than glyphosate alone and that safety studies of Roundup, Roundup's adjuvants and 'inert' ingredients' were necessary."
1Inert Ingredients in Glyphosate-Based Herbicides Are Toxic to Living CellsMost studies looking into glyphosate toxicity have only studied glyphosate and its toxic breakdown product, aminomethylphosphonic acid (AMPA), even though the presence of "inactive" compounds are likely amplifying glyphosate's toxic effects.
A 2012 study revealed that ingredients such as solvents, preservatives, surfactants and other added substances are anything but "inactive."
They can, and oftentimes do, contribute to a product's toxicity in a synergistic manner — even if they're non-toxic in isolation. Certain adjuvants in
glyphosate-based herbicides were also found to be "active principles of human cell toxicity," adding to the hazards inherent with glyphosate.
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