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Study finds high exposure to food-borne toxins
Date:11/13/2012

ures risk based on exposures of individual contaminants. We wanted to understand the cumulative risk from dietary contaminants. The results of this study demonstrate a need to prevent exposure to multiple toxins in young children to lower their cancer risk."

The researchers used data from the 2007 Study of Use of Products and Exposure-Related Behavior (SUPERB), which surveyed households in California with children between two and five to determine how their diets, and other factors, contribute to toxic exposure. Specifically, SUPERB homed in on 44 foods known to have high concentrations of toxic compounds: metals, arsenic, lead and mercury; pesticides chlorpyrifos, permethrin and endosulfan; persistent organic pollutants dioxin, DDT, dieldrin and chlordane; and the food processing byproduct acrylamide. Toxin levels in specific foods were determined through the Total Diet Study and other databases.

Perhaps most disturbing, preschool-age children had higher exposure to more than half the toxic compounds being measured. Even relatively low exposures can greatly increase the risk of cancer or neurological impairment.

"We need to be especially careful about children, because they tend to be more vulnerable to many of these chemicals and their effects on the developing brain," says Hertz-Picciotto.

Though these results are cause for concern, the study also outlines strategies to lower family exposure. For example, organic produce has lower pesticide levels. In addition, toxin types vary in different foods. Certain pesticides may be found in lettuce and broccoli, while others affect peaches and apples.

"Varying our diet and our children's diet could help reduce exposure," said Hertz-Picciotto. "Because different foods are treated differently at the source, dietary variation can help protect us from accumulating too much of any one toxin."

Families also can reduce their consumption of animal meat and fats, which m
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Contact: Dorsey Griffith
dorsey.griffith@ucdmc.ucdavis.edu
916-734-9118
University of California - Davis Health System
Source:Eurekalert

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