Small does of pesticides can affect people. The Environmental Working Group's latest study shows people can lower their pesticide exposure by almost 90% by avoiding the top 12 most contaminated fruits and vegetables and eating the less contaminated instead. Eating the 12 most contaminated will expose a person to about 14 pesticides per day. Eating the 12 least contaminated will expose a person to less than 2 pesticides per day. Some vegetables listed here have the highest pesticides, therefore, it is recommended you only buy these organic: Peaches, Apples, Sweet Bell Peppers, Celery, Nectarines, Strawberries, Cherries, Lettuce, Grapes (Imported), Pears, Spinach, and Potatoes. The lowest in pesticides are: onions, avocado, sweet corn, pineapples, mango, sweet peas (frozen), asparagus, kiwi, bananas, cabbage, broccoli, and eggplant.