Nearly 70 percent of sampled produce was found to have significant pesticide residue, according to a new report by one government agency. The biggest offender? Strawberries. The Environmental Working Group released its 2017 list of the “dirtiest” and “cleanest” items in the produce isle. Strawberries, spinach and nectarines took the top spots of shame, while sweet corn, avocados and pineapples were rated the “cleanest.” At least 178 different pesticides were found on the produce, even after they were washed, and in some instances, peeled. Pesticides have been known to cause a number of health issues, including short-term problems like headaches and digestive troubles to chronic conditions like cancer and endocrine disruption. “Eating plenty of fruits and vegetables is essential no matter how they’re grown, but for the items with the heaviest pesticide loads, we urge shoppers to buy organic,” said Sonya Lunder, an EWG senior analyst. It’s particularly important to reduce young children’s exposures to pesticides, says Lunder. “Even low levels…