Recent organic diet intervention studies suggest that diet is a significant source of pesticide exposure in young children. These studies have focused on children living in suburban communities. The objective of the study was to determine whether consuming an organic diet reduced urinary pesticide metabolite concentrations in 40 Mexican-American children, 3-6 years, living in California urban and agricultural communities.

Few studies have investigated maternal exposures during pregnancy to pesticides currently in use. Castorina et al. measured metabolites of current-use pesticides and other precursor compounds in urine samples collected twice during pregnancy from 538 California women enrolled in the Center for the Health Assessment of Mothers and Children of Salinas (CHAMACOS) cohort.