The “organic food is more nutritious” meme is just one of a number of reasons people give for paying a premium for it. In my experience it’s not the dominant reason, nor is it a particularly valid one.
*"In 2009, the United Kingdom’s Food Standards Agency reviewed 67 studies on this topic and couldn’t find much difference in nutrient quality. In 2012, a larger review of 237 studies published in the Annals of Internal Medicine also found that organic food didn’t appear to be any healthier or safer than their conventionally grown counterparts.
But there have long been dissenters who argue that there must be some health benefits to organic. And a new study in the British Journal of Nutrition, led by Carlo Leifert of Newcastle University, has reopened this debate by adding a small twist. Their review of 347 previous studies found that certain organic fruits and vegetables had higher levels of antioxidants than conventionally grown crops.
Unfortunately, this doesn’t prove very much by itself. No one knows if those moderately higher levels of antioxidants actually boost your health. For that to happen, they’d have to be absorbed into your bloodstream and distributed to the right organs — and there just hasn’t been much good research showing that. For now, there’s little evidence to suggest concrete health benefits.
In the meantime, some experts have suggested that this endless health debate has become a distraction. Marion Nestle of New York University argues that the best reasons to buy organic produce is for the environmental impacts and production values. Any nutritional benefit is a “bonus,” if there even is one."*
More recently organic produce is being promoted based on its lack of dem ebil GMOs, part of the “toxin” fears that drive a lot of people.
My take is that environmental concerns make the most sense in embracing organic, though that’s tempered by the reality that you need to have considerably more land in production to match the productivity of conventional agriculture, and converting wild lands to agriculture (even the warm fuzzy kind) is not such a good thing.
I try to use as few pesticides as possible in my garden, lessening potential negative impact on the mini-biosphere in my yard and maybe on myself, though I doubt the latter. I choose not to pay through the nose for organic foods, trying instead to eat more conventionally grown healthy stuff.