You have probably stood in the produce aisle wondering whether the organic apple is worth the extra money. The honest answer is more nuanced than either side of the debate tends to admit. Here is what the USDA Organic label actually guarantees, what the research says about nutrition and pesticides, and how to spend your organic budget where it counts.
What does "USDA Organic" actually mean?
Organic is a legal standard, not a marketing word. Under the USDA organic standards, crops must come from land that has had no prohibited substances applied for at least three years, pests are managed mainly through crop rotation and physical, mechanical and biological controls, and genetic engineering, ionizing radiation and sewage sludge are prohibited. Organic livestock must eat 100 percent organic feed, have year-round access to the outdoors, and graze on pasture during the grazing season.
Two points are often misunderstood. Organic does not mean "no pesticides": when other methods are not enough, farmers may use a limited list of approved biological, botanical or synthetic substances. And because the standard prohibits genetic engineering, anything certified organic is also non-GMO. The USDA labeling rules set the tiers you see on packages: "organic" means at least 95 percent organic ingredients, while "made with organic" means at least 70 percent.
Is organic food more nutritious?
Possibly a little, depending on the nutrient. You may have seen figures claiming organic food has around a quarter more vitamin C, iron and magnesium. Those come from a 2001 review of earlier studies, and larger analyses since then have been more cautious. A 2012 Stanford systematic review found no strong evidence that organic foods are significantly more nutritious than conventional ones.
A 2014 meta-analysis of 343 studies did find meaningful differences in plant compounds: organic crops had higher concentrations of antioxidants such as polyphenols, lower levels of the toxic metal cadmium, and pesticide residues about a quarter as often. Whether those differences change long-term health has not been settled.
Does eating organic lower your pesticide exposure?
Yes, and this is the clearest benefit. The Stanford review found organic produce was less likely to carry detectable pesticide residues, although the difference in residues above legal limits was small. In a 2019 study of four US families, switching to an all-organic diet significantly reduced urinary levels of 13 pesticides and their breakdown products, including chlorpyrifos and malathion metabolites. The same Stanford review also found antibiotic-resistant bacteria were more common on conventional chicken and pork than on organic.
What about GMOs?
Certified organic food is non-GMO by definition, which matters if avoiding genetically engineered crops is important to you for environmental or farming-practice reasons. On safety, a large 2016 report from the National Academies of Sciences found no substantiated evidence that genetically engineered crops on the market are less safe to eat than conventionally bred ones. Choosing non-GMO is a reasonable personal preference, but the case for it rests mostly on how food is farmed rather than on a proven health risk.
How does organic farming affect the environment?
Excess nitrogen and phosphorus from fertilizer and manure can run off farmland into rivers and lakes, which the EPA lists among the main sources of nutrient pollution. Organic standards require farmers to build soil fertility with crop rotations, cover crops and composted plant and animal material, and to limit synthetic inputs. Buying organic, especially from local farms, is one way to support those practices.
How to prioritize organic on a budget
The single most important thing is eating more fruits and vegetables at all: only about one in ten US adults eats enough vegetables, according to the CDC. A conventional carrot beats no carrot. With that in mind:
- Go organic where residues are most common. Thin-skinned produce you eat whole, such as berries, leafy greens and apples, is a good place to start.
- Save on thick-skinned produce. Avocados, onions and citrus that you peel are lower priorities.
- Wash everything. Rinse produce under running water, organic or not.
- Check the label on supplements too. Look for USDA Organic certification and independent testing. Many Ora products, including Easy Being Green and So Lean & So Clean, are certified organic, and we test every batch under our 5 Nation Standard.
For more on why we care about how food is grown, read why eat organic and how plant-based nutrients compare with factory farming.
Originally written by Erika Austin, PhD, and updated by the Ora team.
