Sharon Begley
|
Apr 1, 2008 10:56 AM
Although some steps that we take to save the planet entail sacrifice
(personally, I am getting tired of seeing my breath in my ice-cold
house as a result of turning down the thermostat on my gas-burning
furnace all winter. But I digress.), more and more evidence is emerging
that organic produce is a win-win.
Of course buying organic sends a market signal that leads growers to
use fewer pesticides and other agricultural chemicals, not to mention
keeps carcinogens and neurotoxins out of your diet. But according to the most comprehensive comparison to date
of the nutrient content of organic vs. conventional fruits, vegetables
and grains, organics contain higher levels of eight out of 11 important
nutrients. Among them: polyphenols (linked to lower risk of lung cancer and heart disease, as well as to greater longevity) and antioxidants (ditto).
Since 2001 more than 40 studies comparing the nutrient content of
organic and conventional foods have been published. From those and some
earlier studies, the Organic Center
identified 236 scientifically-valid head-to-head match ups between an
organic food and a conventional one. The nutrients included
antioxidants (total phenolics, total antioxidant capacity, quercetin
and kaempferol), three precursors of key vitamins (Vitamins A, C, and
E), two minerals (potassium and phosphorous) and total protein.
Results: the organic food trumped the conventional one in 145
match-ups, or 61 percent of the cases. Organics came out ahead in
polyphenols and antioxidants in about three-quarters of the 59
match-ups of these compounds.
More