CNN —

Eating a lot of fruits or vegetables with higher levels of pesticides may raise the levels of dozens of pesticides in your urine, according to a new study.

"We compared the amount of pesticides on fruits and vegetables to actual measurements of pesticides in people," said lead study author Alexis Temkin, vice president of science for the Environmental Working Group, or EWG, a health advocacy organization that publishes a list of extremely contaminated produce dubbed the "Dirty Dozen." Advertisement

It's part of the annual EWG's Shopper's Guide to Pesticides in Produce , which also includes the "Clean Fifteen," a list of the least contaminated fruits and veggies.

The latest study compared levels of pesticides found by the U.S. Department of Agriculture in produce with urine s

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