You are standing in the produce section at the grocery store in front of the popular and seemingly fresh berry stand, and there are so many choices - organic blueberries from Maine, conventional raspberries from Mexico and strawberries from an unlabeled origin. Finding the time to shop for groceries is hard enough, and nobody wants to spend 10 minutes of their day belaboring over the healthiest berry for their family. And organic fruits and vegetables may cost 50-100% more than their conventional counterparts. So when it comes to produce, what is the best choice from a health perspective?
Organic fruits and vegetables are farmed with botanical or primarily non-synthetic pesticides instead of long-lasting synthetic chemicals. Conventionally-grown produce utilizes potentially harmful chemicals that can be ingested by consumers but also cause environmental problems when they run off into watersheds, affecting wildlife populations, other plants, and the ecosystem as a whole. We ingest pesticides not just from the food we eat, but "secondhand," in water, meat, and consumer products. Choosing organic means contributing a bit less to the earth's "chemical load" and reducing the impact on the environment and on human populations.

As far as the nutritional superiority of organic produce, this question is still debatable. But in March 2008, the State of Science Review published the first major, in-depth review of published scientific literature, and concluded that organic produce
are nutritionally superior. You can
check out the paper and draw your own conclusions.
As with all topics in nutrition science, it is extremely difficult to measure a single variable such as a fruit pesticide, and then try to determine the possible effects of this variable on the human body. So naturally, many studies show that pesticides do not appear to cause harm but some have shown that pesticides may be dangerous in higher amounts. Again, the jury is out.
My advice to you is, there is no such thing as a perfect diet. No one should panic if they eat a conventional berry. But it's a good habit to get into to consume fewer pesticides, and to help your children to do the same. This would be a good goal for 2009 - you might just boost the nutritional quality of your foods and help the environment at the same time.
There is a list of produce, often called the “dirty dozen” fruits and vegetables, that contain the highest number of pesticides, according to the USDA lab tests. When buying these fruits and vegetables, choose organic:
- apples
- bell peppers
- celery
- cherries
- imported grapes
- nectarines
- peaches
- pears
- potatoes
- red raspberries
- spinach
- strawberries
Can’t remember this list? Look at the skin of your produce in question - if the skin is thick like an avocado, the pesticides are not easily absorbed and consumed by you. But grapes, strawberries and spinach have thin and edible skins, which absorb the pesticides. Washing and rinsing will reduce pesticides, but it will not eliminate them.
And yes, organic will usually cost more. But if you can buy organic produce at a farmer’s market or directly from local supplier while in season, you can often avoid paying the extra. I live in Denver, Colorado, and we have a great
organic produce delivery service and they deliver organic, mostly local fruits and vegetables to my front door every week! Try a Google search to check for similar services in your area.
I'll discuss organic vs. non-organic meats and dairy products in a future post.
Thumbnail on zrecs.com by karimian, sharved via Flickr.