Monsanto, and its German owner Bayer, maintain that glyphosate does not pose a health risk, and government officials say that residues of glyphosate and other pesticides found in food products are almost always so low that they are not considered harmful.
But international scientists affiliated with the World Health Organization have classified glyphosate as probably carcinogenic to humans, and recent studies out of Europe have found glyphosate herbicides pose not just cancer, but other health risks.
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To be clear, different organic certification standards exist, and some, like oregon tilth, test soil for drift from the neighbouring fields. Part of why organic food is more expensive, it’s an externality from conventional agriculture.