Concerns about the world's most widely used herbicide are taking a new twist. Researchers looking at exposure to the herbicide known as glyphosate, the key ingredient in Monsanto's Roundup-branded herbicides, said they tested and tracked 69 expectant mothers and found that the presence of glyphosate levels in their bodily fluids correlated with unfavorable birth outcomes. Glyphosate ... has become the subject of hot debate over the last few years because of research that links the herbicide to types of cancer and other health ailments. Monsanto is being sued by hundreds of people who claim they or their loved ones developed non-Hodgkin lymphoma because of exposure to glyphosate-based Roundup. Documents discovered in the course of the litigation indicate the company may have manipulated scientific research to hide evidence of harm. The team that presented their report Wednesday ... collected the data over two years, from 2015-2016, and found that higher glyphosate levels in women correlated with significantly shorter pregnancies and with lower adjusted birth weights. [Paul Winchester, who led the study], said he was surprised to see such a high percentage of women tested showing glyphosate in their urine. He was sharply critical of the U.S. government, which routinely skips testing for glyphosate residues in food.