I am simply searching through PubMed to find reviews of the safety of glyphosate, and this is what I find. You can do the same, it’s a user-friendly searchable database. There is a remarkable consistency to the reviews – they all agree that the evidence does not support an association between glyphosate exposure and any adverse health outcome. The IARC are the only outliers, and yet their flawed and quirky conclusion is the one that garnered the most attention.
There is also a theme in the reviews that we could use more and better quality studies. To put that into context, however, that is almost always the conclusion of such reviews. It is difficult to prove a negative – a lack of a correlation. Such a negative conclusion is only as good as the data supporting it, and therefore the more and more rigorous the data the better the conclusion.
We can always use more and better data when it comes to safety, but the existing data is robust, consistent, and independently replicated, and includes both glyphosate and formulations with glyphosate.
Glyphosate, in fact, is one of the safer pesticides in use (including many organic pesticides). It has replaced far more toxic herbicides. Opposing glyphosate because of unwarranted fears of toxicity is likely to cause harm due to whatever replaces it. Tilling is bad for the soil and releases CO2 into the atmosphere, and we cannot feed the world through hand weeding. Herbicides have to be part of the equation, and glyphosate is one of the safest out there.