I hate to rain on everyone's parade but I've just come across this paper.
As it's a long, technical, academic paper, I thought I'd quite the abstract here:
"Glyphosate, the active ingredient in Roundup®, is the most popular herbicide used worldwide. The industry asserts it is minimally toxic to humans, but here we argue otherwise. Residues are found in the main foods of the Western diet, comprised primarily of sugar, corn, soy and wheat. Glyphosate's inhibition of cytochrome P450 (CYP) enzymes is an overlooked component of its toxicity to mammals. CYP enzymes play crucial roles in biology, one of which is to detoxify xenobiotics. Thus, glyphosate enhances the damaging effects of other food borne chemical residues and environmental toxins. Negative impact on the body is insidious and manifests slowly over time as inflammation damages cellular systems throughout the body. Here, we show how interference with CYP enzymes acts synergistically with disruption of the biosynthesis of aromatic amino acids by gut bacteria, as well as impairment in serum sulfate transport. Consequences are most of the diseases and conditions associated with a Western diet, which include gastrointestinal disorders, obesity, diabetes, heart disease, depression, autism, infertility, cancer and Alzheimer’s disease. We explain the documented effects of glyphosate and its ability to induce disease, and we show that glyphosate is the “textbook example” of exogenous semiotic entropy: the disruption of homeostasis by environmental toxins."
This may be too technical for some. The gist of it is that glyphosate may make a long list of diseases and disorders (from Alzheimer's to obesity) worse. I should emphasise that this is just one paper and I don't want to be a Daily Mail scaremonger.
This is important because , since it's non-persistent, it's the herbicide most often used by 'nearly-organic' gardeners, which is what many of us are. The stuff's also made by Monsanto!
Any comments? I don't yet know what the balance of the evidence is.