Chlormequat chloride, an agricultural chemical, is primarily used as a plant growth regulator on ornamental plants in the U.S. However, a 2018 decision by the U.S. Environmental Protection Agency allowed the import of foods treated with chlormequat, mainly grains. Chlormequat is approved for use on food crops in Europe and parts of North America, but it has concerning toxicological properties, particularly in terms of reproductive and developmental toxicity. While there are differences in the toxicological literature on chlormequat, more investigation is needed. This pilot study measured levels of chlormequat in urine samples from individuals in the U.S. and found that it was detected in 80% of samples, with higher concentrations observed in samples from 2023. Chlormequat was also detected in oat and wheat-based products purchased in the U.S., indicating a potential dietary source of exposure. More research is needed to fully understand chlormequat exposure in the U.S. population and its potential health effects.
https://www.nature.com/articles/s41370-024-00643-4