While a spinach leaf or strawberry may have more traces of pesticides on it than, say, a hard-skinned avocado or pineapple, the available data doesn't suggest you should stop eating any fruits or veggies out of pesticide-related fears.
In 2011, a pair of food scientists slammed the EWG's annual Dirty Dozen report in
a study published in the Journal of Toxicology, and the World Health Organization has
said "the EWG is using fear, not facts" to create their lists.
In the 2011 study, the food scientists found that the levels of pesticides people may get exposed to when eating fruits and vegetables are extremely low — well below the levels the Environmental Protection Agency thinks are harmful. In fact, the amount of pesticide on the produce you eat is likely
a hundred times lower than the smallest dose that is harmful to laboratory animals for most chemicals.
For example, the scientists found that pesticide exposure estimates for the 10 most commonly detected chemicals on spinach are thousands of times — if not
tens of thousands— lower than the levels the EPA considers worrisome.
Buying organic produce may not help you avoid pesticides, either. In fact, as the
American Council on Science and Health points out, there's more regulation for conventional pesticides than the ones certified for organic use.