I attach a Q/A from "Sense about Science" , well worth following.
Can the herbicide glyphosate be linked to to neurological disorders (learning disabilities (LD), attention deficit hyperactive disorder (ADHD), autism, dementia, Alzheimer's, schizophrenia and bipolar disorder) as described in this article?
Twitter Talk
18/04/2013
Dr Timothy Marrs "Glyphosate cannot be linked to the neurological disorders listed. The toxicity of glyphosate has been extensively reviewed and is deemed safe to use by different organisations including the WHO (FAO/WHO, 1987; 2006). This herbicide has low or non-existent effects on how signals are transmitted in the brain. In addition to this glyphosate is poorly absorbed within our intestine, instead it is excreted unchanged in the urine. So not only does not affect how our brains work, there is also little chance of it entering our system if consumed, except in grose overdose."
"In addition to this there is no evidence of carcinogenic potential in longterm studies. There is little evidence to show that it damages the cell in a variety of in vitro and in vivo tests (FAO/WHO, 1987; Williams et al 2000; FAO/WHO (2006). Effects on fertility were not seen in multigeneration studies in the rat nor does it affect foetuses in utero."
"It is worth noting that the biochemical synthetic pathway that Roundup attacke in plants does not exist in humans."
References
Atkinson D. 1985. Toxicological properties of glyphosate, a summary. In: Grossbard E, Atkinson D, editors. The Herbicide Glyphosate. London: Butterworths 127-133.
FAO/WHO (1987). Pesticide residues in food - 1986. Evaluations 1986 Part II toxicology. FAO Plant production and protection paper 78/2. Rome. Food and Agriculture Organization of the United Nations.
http://www.fao.org/docrep/W8141E/W8141E00.htmFAO/WHO (1998). Pesticide residues in food - 1997. Report. FAO Plant Production and Protection Paper 145 . Rome. Food and Agriculture Organization of the United Nations.
http://www.fao.org/docrep/W8141E/W8141E00.htmFAO/WHO (2006). Pesticide residues in food - 1986. Evaluations 2004 Part II toxicology. Geneva. World Health Organization.
http://whqlibdoc.who.int/publications/2006/9241665203_eng.pdfWilliams GM, Kroes R, Munro IC (2000). Safety evaluation and risk assessment of the herbicide Roundup and its active ingredient, glyphosate, for humans. Regul Toxicol Pharmacol;31:117-165.
- See more at:
http://www.senseaboutscience.org/pages/plant-science-expert-panel.html#sthash.4X250wCg.dpuf