dv said:
The Greens’ opposition to GMOs is unscientific. There was some cause for caution 20 years ago when less was known, but now the evidence is in and it is clear that GMOs are innocuous.
I expect/hope that the Greens will be the most rational party around, and to do this they need to drop some baggage.
There have no been dramatic consequences from consuming food containing GM products thus far but I don’t think that you can conclude that all GMOs are innocuous.
The looming health problem appears to be from the associated high level usage of glyphosate, now classified by WHO as “likely to be carcinogenic to humans”, chemical adjuvants in commercial formulations, and their metabolites.
Has the toxicity of Roundup been greatly underestimated?
When regulatory agencies assess pesticides for safety they invariably test only the claimed active ingredient.
Nevertheless, these do not necessarily represent realistic conditions since in practice it is the full, formulated herbicide (there are many Roundup formulations) that is used in the field. Thus, it is relevant to consider, not only the active ingredient, in this case glyphosate and its breakdown product AMPA, but also the other compounds present in the herbicide formulation since these enhance toxicity. For example, formulations of glyphosate commonly contain adjuvants and surfactants to stabilize and facilitate penetration into the plant tissue. Polyoxyethylene amine (POEA) and polyethoxylated tallowamine (POE-15) are common ingredients in Roundup formulations and have been shown to contribute significantly to toxicity (Moore et al. 2012).
Our own recent study in the model organism Daphnia magna demonstrated that chronic exposure to glyphosate and a commercial formulation of Roundup resulted in negative effects on several life-history traits, in particular reproductive aberrations like reduced fecundity and increased abortion rate, at environmental concentrations of 0.45-1.35 mg/liter (active ingredient), i.e. below accepted environmental tolerance limits set in the US (0.7 mg/liter) (Cuhra et al. 2013). A reduced body size of juveniles was even observed at an exposure to Roundup at 0.05 mg/liter.
This is in sharp contrast to world-wide regulatory assumptions in general, which we have found to be strongly influenced by early industry studies and in the case of aquatic ecotoxicity assessment, to be based on 1978 and 1981 studies presented by Monsanto claiming that glyphosate is virtually non-toxic in D. magna (McAllister & Forbis, 1978; Forbis & Boudreau, 1981).
https://www.independentsciencenews.org/news/how-extreme-levels-of-roundup-in-food-became-the-industry-norm/