A recent study has found significant concentrations of the herbicide glyphosate in the urine samples of city dwellers. Everyone examined had concentrations of glyphosate at 5 to 20 times the limit for drinking water. Glyphosate-based weedkillers are often sprayed onto railway lines, urban pavements, and roadsides.
The study comes not long after another confirming that glyphosate is contaminating groundwater. And in 2011 there were two U.S. Geological Survey studies which found glyphosate in streams, rain, and even in the air in agricultural areas.
According to GM Watch:
“Other recent studies ... indicate that people may not only be absorbing glyphosate from multiple sources but that it can circulate in the blood and can even cross the placental barrier and so reach the developing fetus.”