Researchers from the school of physics in NUI Galway studying exposure to glyphosate in a group of professional amenity horticultural workers for four years have found low exposure to the herbicide ingredient.

"The highest measured glyphosate concentrations were equivalent to less than 1% of the acceptable operator exposure level set by the European Food Safety Authority" (EFSA), they concluded from results published in the International Journal of Hygiene and Environmental Health.