There’s a growing interest in eating organic, especially among parents concerned for the health of their family. But you might be wondering if, compared a diet of conventional foods, choosing organic packs anything more than negligible benefits.

New research from Sweden’s Coop and the Swedish Environmental Research Institute put the effects of eating organic to the test. For the study, the scientists recruited a family that closely resembles those found in many modern households, consisting of two adult parents, and three kids ages 12, 10 and 3.

The family started by eating a conventional diet for one week, followed by a fully organic diet for the next two weeks. During the testing period, each family member provided morning urine samples to be analyzed for 12 known pesticides or metabolites

“that the pesticides left the body rapidly after the participants change to an organic food diet,” according to Magnér. “If you are the least worried about what these chemicals can do to your health, you can control it through your choices of food.”