http://action.sumofus.org/a/monsanto-ro ... /3/?sub=fb
It's not as bad as they make it seem, mainly due to it's short lifespan
chronic problems: long term use is more likely to have effectsIngestion of more than 85 ml of the concentrated formulation is likely to cause significant toxicity in adults. Corrosive effects – mouth, throat and epigastric pain and dysphagia – are common. Renal and hepatic impairment are also frequent, and usually reflect reduced organ perfusion. Respiratory distress, impaired consciousness, pulmonary edema, infiltration on chest X-ray, shock, arrhythmias, renal failure requiring haemodialysis, metabolic acidosis, and hyperkalaemia may occur in severe cases. Bradycardia and ventricular arrhythmias often present prior to death.
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Endocrine disruption In a study of rats and mice fed diets of containing 0%, 0.3125%, 0.625%, 1.25%, 2.5%, or 5.0% glyphosate for 13 weeks, endocrine effects were observed only in rats and only at the two highest doses. Male rats at the highest dose exhibited reductions in sperm concentrations that remained within the strain's normal range. Female rats in the highest dose group experienced a slight increase in the length of the estrous cycle. Administering Roundup Transorb orally to prepubescent rats once a day for 30 days reduced testosterone production and affected testicle morphology, but did not affect levels of estradiol and corticosterone. In 2007, the EPA selected glyphosate for further screening through its Endocrine Disruptor Screening Program. Selection for this program is based on a compound's prevalence of use and does not imply particular suspicion of endocrine activity. Genetic damage Several studies have not found mutagenic effects