An anonymous reader quotes a report from U.S. News & World Report: More than 80% of Americans have a widely used herbicide lurking in their urine, a new government study suggests. The chemical, known as glyphosate, is "probably carcinogenic to humans," the World Health Organization's International Agency for Research on Cancer has said. Glyphosate is the active ingredient in Roundup, a well-known weed killer. The U.S. National Nutrition Examination Survey found the herbicide in 1,885 of 2,310 urine samples that were representative of the U.S. population. Nearly a third of the samples came from children ages 6 to 18.

Traces of the herbicide have previously been found in kids' cereals, baby formula, organic beer and wine, hummus and chickpeas. In 2020, the EPA determined that the chemical was not a serious health risk and "not likely" to cause cancer in humans. However, a federal appeals court ordered the EPA to reexamine those findings last month, CBS News reported.

In 2019, a second U.S. jury ruled Bayer's Roundup weed killer was the cause of a man's cancer. It was only the second of some 11,200 Roundup lawsuits to go to trial in the United States. Another California man was awarded $78 million (originally $289 million) in the first lawsuit alleging a glyphosate link to cancer.

A study published around the same time as those rulings found that glyphosate "destroys specialized gut bacteria in bees, leaving them more susceptible to infection and death from harmful bacteria."

Further reading: 'It's a Non-Party Political Issue': Banning the Weedkiller Glyphosate (The Guardian)