The Dirty Dozen is a list of produce that has an especially high amount of pesticides and residue of pesticides. Experts say if even if you can't afford to go 100% organic, it is beneficial to you to buy the items from the dirty dozen in only organic as much as possible, since these items, more than other produce items, carry such high volumes of pesticides.
Moral of the story? Eating fruits and veggies (organic or not) is important, and even if you can't buy organic you should still eat them. However, if you can incorporate even a few organic produce items into your shopping trip/shopping budget, pick the ones below as you'll get the greatest health-bang for your buck. Note: the list below is ranked in order of the highest pesticide residue, meaning that apples (#1) retain the greatest amounts of pesticides, so are one of the most important items to buy organic.
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Dirty Dozen - Buy these organic