10 Foods You Should Only Buy Organic

HealthCentral Editorial Team Nov 8, 2012 (updated May 6, 2014)
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Most foods in the U.S. contain some trace of chemicals, pesticides, antibiotics and genetically-modified substances. By eating organic, you can lower your risk of exposure to chemicals. It may be more expensive, but the following fruits and vegetables are worth buying. While organic alternatives may not be available all the time, it’s important to be aware and make substitutions when you can.

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Apples
Apples
An apple a day may keep the doctor away but it’s still filled with chemicals. According to the Environmental Working Group, apples have the worst pesticides levels. Before you take your first bite of a non-organic apple, thoroughly wash the skin. Peeling the skin strips away most of the nutritional benefits.
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Celery
Celery
Rich in Vitamins C and potassium celery is one of the healthiest vegetables but ranks among the top of the “dirty” produce list. A piece of celery had 14 types of pesticides on it. Vegetables with edible exteriors like celery are prone to contamination. 
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Strawberries
Strawberries
Non-organic strawberries have high levels of pesticide residue. While chemicals are found in most non-organic foods in small amounts, too many can be bad for your health.
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Peaches & nectarines
Peaches & nectarines
Peaches were found to have more pesticides than any other fruit. The thin skin on peaches and nectarines makes them easily contaminated. 
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Spinach
Spinach
Chock-full of iron and Vitamin C, spinach is a super food that you should have in your diet. Like other leafy greens, spinach is also exposed to a lot of chemicals.
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Grapes
Grapes
Imported grapes that are prevalent in grocery stores out of season are full of pesticides. Chile and Mexico are the top source for grapes imported to the U.S.
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Potatoes
Potatoes
A root vegetable, potatoes are heavily exposed to pesticides and fertilizers in the ground. 90 percent of this all-American staple that was tested had chemicals on them. 
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Blueberries
Blueberries
Nothing tastes better than fresh, hand-picked blueberries. Try to eat them in season during the summer from organic farms.
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Lettuce
Lettuce
Before digging into the salad, keep in mind that your lettuce is likely has chemicals on it. Choose organic lettuce if available. 
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Greens
Greens
Kale and Collard greens may pack the nutritional punch but they hold more pesticides than than most vegetables. Go organic to get the healthiest value.