Organic products no more
nutritious than conventional counterparts
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A
study published in the Annals of Internal Medicine shows that organic
fruits, vegetables and meat may be no more nutritious than their conventional
counterparts. Nor were they any less likely to be contaminated by dangerous
bacteria like E. coli. In the meta-analysis study, researchers
combined data from 237 studies, examining a wide variety of fruits,
vegetables and meats. For four years, they performed statistical analyses
looking for signs of health benefits from adding organic foods to the diet.
Higher level of phosphorus … but no real benefit
One
finding of the study was that organic produce, over all, contained higher
levels of phosphorus than conventional produce. But because almost everyone
gets adequate phosphorus from a wide variety of foods, according to the
researchers, the higher levels in the organic produce are unlikely to confer
any health benefit. The organic produce also contained more compounds known
as phenols, believed to help prevent cancer, than conventional produce. While
the difference was statistically significant, the size of the difference
varied widely from study to study, and the data was based on the testing of
small numbers of samples. Other variables, like ripeness, had a greater
influence on nutrient content. Thus, a lush peach grown with the use of
pesticides could easily contain more vitamins than an unripe organic one.
Lower pesticide & antibiotic residues
Over
all, the researchers concluded that 38% of conventional produce tested in the
studies contained detectable residues, compared with 7% for the organic
produce. They also noted a couple of studies that showed that children who
ate organic produce had fewer pesticide traces in their urine. However, the
levels were almost always under the allowed safety limits by the
Environmental Protection Agency.
Similarly,
organic meat contained considerably lower levels of antibiotic-resistant
bacteria than conventionally-raised animals did, but bacteria,
antibiotic-resistant or otherwise, would be killed during cooking.
On
the study’s results, the Organic Trade Association’s (OTA) Executive Director
and CEO Christine Bushway said: "Consumers seeking to minimize their
exposure to pesticide residues will find that foods bearing the USDA Organic
label are the gold standard. This is because organic foods have the least
chemicals applied in their production and the least residues in the final
products. And, because organic livestock practices forbid the use of
antibiotics, including the routine use of low level antibiotics for growth,
organic meat contains less antibiotic-resistant bacteria."
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