The bad news isn’t news to many — eating a conventional diet leads to pesticide buildup. But a new study published in Environmental Research reveals surprisingly good news. Switching to an all-organic diet quickly and significantly reduced synthetic pesticide levels in study participants. After six days of an all-organic diet, their pesticide and pesticide metabolite levels dropped by an average of 60.5 percent.
Four American families of different races participated in the study, titled Organic Diet Intervention Significantly Reduces Urinary Pesticide Levels in U.S. Children and Adults. The families lived in Atlanta, Baltimore, Minneapolis and Oakland.
The most significant finding was a huge drop in levels of organophosphates, insecticides that are commonly used in agriculture, gardening and household products, such as roach spray. Farm workers often administer them when growing apples, peaches, strawberries, spinach, potatoes and other common crops. The study showed a 95 percent drop in the organophosphate malathion, a probable human carcinogen linked to brain damage in children. Levels of pesticides associated with endocrine disruption, autism, adverse reproductive effects, thyroid disorders, lymphoma and other serious health issues dropped between 37 and 83 percent after a week of all-organic eating.
“This study shows that organic works,” said study co-author Kendra Klein, PhD, senior staff scientist at Friends of the Earth. “We all have the right to food that is free of toxic pesticides. Farmers and farmworkers growing our nation’s food and rural communities have a right not to be exposed to chemicals linked to cancer, autism and infertility. And the way we grow food should protect, not harm, our environment. We urgently need our elected leaders to support our farmers in making healthy organic food available for all.”
The study’s authors are affiliated with the University of California at San Francisco, UC Berkeley, Friends of the Earth U.S. and the Commonweal Institute. Friends of the Earth is urging the U.S. Congress to pass a bill to ban chlorpyrifos, a pesticide that causes brain damage in children. In 2017 under President Trump, the U.S. Environmental Protection Agency reversed its proposed ban on chlorpyrifos.
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