https://www.theguardian.com/us-news/2022/jul/09/weedkiller-glyphosate-cdc-study...

More than 80% of urine samples drawn from children and adults in a US health study contained a weedkilling chemical linked to cancer, a finding scientists have called "disturbing" and "concerning". The report by a unit of the Centers for Disease Control and Prevention (CDC) found that out of 2,310 urine samples, taken from a group of Americans intended to be representative of the US population, 1,885 were laced with detectable traces of glyphosate. This is the active ingredient in herbicides sold around the world, including the widely used Roundup brand. Almost a third of the participants were children. [Lianne] Sheppard co-authored a 2019 analysis of people highly exposed to glyphosate, which concluded there was a "compelling link" between glyphosate and an increased risk of non-Hodgkin lymphoma. Both the amount and prevalence of glyphosate found in human urine has been rising steadily since the 1990s when Monsanto Co. introduced genetically engineered crops designed to be sprayed directly with Roundup, according to research published in 2017. The weedkiller is sprayed directly over genetically engineered crops such as corn and soybeans, and also over non-genetically engineered crops such as wheat and oats as a desiccant to dry crops out prior to harvest. It is considered the most widely used herbicide in history. The International Agency for Research on Cancer, a unit of the World Health Organization ... classified glyphosate as a probable human carcinogen in 2015.