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More Than 90 Percent of Americans Have Pesticides or Their Byproducts in Their Bodies

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Produced with FERN, non-profit reporting on food, agriculture, and environmental health.This story was produced by the Food & Environment Reporting Network, an independent nonprofit news organization.

Every year U.S. farmers use about a billion pounds of chemicals on crops, including the fruits, nuts and vegetables many parents beg their kids to eat. The Department of Agriculture and Food and Drug Administration are charged with ensuring that these chemicals don’t endanger consumers, and both agencies test the food supply for pesticide residues each year. They focus on foods eaten by babies and children, whose developing bodies are particularly sensitive to toxic chemicals, and typically report that pesticide residues in these products rarely exceed safety standards.

Yet the agencies’ pesticide monitoring approach suffers from several limitations that make it difficult to draw meaningful conclusions about pesticide risks to the nation’s food supply, experts say. What’s more, government agencies don’t monitor risks to farmworkers who labor among those chemicals, or to pregnant women and children who live near agricultural fields.

Since pesticide monitoring began about three decades ago, scientists have learned that even low doses of pesticides and other synthetic chemicals can harm children and that exposure to chemical mixtures, particularly during critical windows of neurodevelopment, may carryserious health risks that take years to emerge. And though crops are often sprayed with multiple chemicals over the growing season, both agencies track pesticide residues one chemical at a time, to determine whether a specific chemical exceeds safety standards set by the Environmental Protection Agency.

That’s why several years ago scientists at the Environmental Working Group, a nonprofit consumer advocacy group, started doing their own analysis of pesticides on produce. The group relies largely on data from the USDA, which tests more produce than the FDA.

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