is corn (yeah, zea mays, that stuff) killing us?

When a Crop Becomes King. New York Times (sign-in required, but it's free). Op-ed column by Michael Pollan, author of "The Botany of Desire: A Plant's-Eye View of the World."

It's something I never really thought about: eating fewer Doritos will not only make us healthier, but will cut down on our dependence on Middle East oil ... ah, so THAT's why that obscene $190 billion corn subsidy was signed by Dubya last month!

[snip]
The problem in corn's case is that we're sacrificing the health of both our bodies and the environment by growing and eating so much of it. Though we're only beginning to understand what our cornified food system is doing to our health, there's cause for concern. It's probably no coincidence that the wholesale switch to corn sweeteners in the 1980's marks the beginning of the epidemic of obesity and Type 2 diabetes in this country. Sweetness became so cheap that soft drink makers, rather than lower their prices, super-sized their serving portions and marketing budgets. Thousands of new sweetened snack foods hit the market, and the amount of fructose in our diets soared.

This would be bad enough for the American waistline, but there's also preliminary research suggesting that high-fructose corn syrup is metabolized differently than other sugars, making it potentially more harmful. A recent study at the University of Minnesota found that a diet high in fructose (as compared to glucose) elevates triglyceride levels in men shortly after eating, a phenomenon that has been linked to an increased risk of obesity and heart disease. Little is known about the health effects of eating animals that have themselves eaten so much corn, but in the case of cattle, researchers have found that corn-fed beef is higher in saturated fats than grass-fed beef.

We know a lot more about what 80 million acres of corn is doing to the health of our environment: serious and lasting damage. Modern corn hybrids are the greediest of plants, demanding more nitrogen fertilizer than any other crop. Corn requires more pesticide than any other food crop. Runoff from these chemicals finds its way into the groundwater and, in the Midwestern corn belt, into the Mississippi River, which carries it to the Gulf of Mexico, where it has already killed off marine life in a 12,000 square mile area.

To produce the chemicals we apply to our cornfields takes vast amounts of oil and natural gas. (Nitrogen fertilizer is made from natural gas, pesticides from oil.) America's corn crop might look like a sustainable, solar-powered system for producing food, but it is actually a huge, inefficient, polluting machine that guzzles fossil fuel a half a gallon of it for every bushel.
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