An excellent question with no clear cut answer. Here’s a take on the subject by the Dallas Morning News. Remember though:

For packaged foods, remember that organic might not mean healthier – organic potato chips are still high in fat and salt.

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What to look for in the Supermarket:

If you are concerned with pesticide residues on produce, there are specific products you may want to purchase organic. They are collectively known as the “dirty dozen” and include strawberries, spinach, and bell peppers. We would add lettuce and other leafy produce to the list as well, as their large surface area may gather more pesticide.