Tuesday, November 04, 2008

What does "GMO" mean?

"GMO" stands for "Genetically Modified Organisms," and in the case of food, it usually refers to foods which have been genetically engineered for reasons unrelated to health or nourishment. You may also see the term "GE foods" (genetically engineered), "genetically altered," "genetically modified" or "genetically improved" to describe these foods.

The process of genetically modifying foods is very new to the world of agriculture. In 1994, there were zero acres of GE food crops in the entire US. At present there are more than 100 million acres! The Center for Food Safety, a non-profit public interest and environmental advocacy group, estimates that 70-75% of all grocery store products contain at least one genetically modified ingredient. You have almost certainly already consumed many GE foods, whether you knew it or not!

Uncertain health risks with GE foods

The health risks associated with GE foods have not been clearly identified. However, many scientists have speculated that these foods are more likely to trigger allergic reactions in some people. Additionally, they suggest that they may change the protein composition of foods in a way that could present problems for the body's immune, inflammatory, digestive, and cellular signaling systems.

GE soybeans and GE corn are of special concern

In addition, a 2004 survey conducted by the Pew Initiative on Food and Biotechnology determined that 45% of all corn, 85% of all soybeans, and 76% of all cotton produced in the U.S. were genetically engineered. This very high percentage of genetic engineering for corn and soybeans is alarming because corn and soybeans are processed into so many commonly used ingredients in processed and prepackaged foods.

For corn, of course, the most common processing product is HFCS, or high fructose corn syrup. This product is found in literally thousands of processed foods, including sodas, baked goods, and many other foods. Other processed food ingredients that often come from corn include corn syrup, corn syrup solids, malt, maltodextrin, maltose, maltol, ethyl maltol, malt syrup, mannitol, dextrose, dextrin, and polydextrose. Of course, corn starch, corn flour, and corn oil are also corn-based ingredients.

As the most common GE food in the U.S., soybeans can be even more difficult than corn to identify in processed and prepackaged foods. The list of processed food ingredients derived from soybeans is a long one and includes: hydrolyzed vegetable protein (HVP), textured vegetable protein (TVP), textured soy protein (TSP), textured soy flour (TSF), lecithin, meat analogs, isolated soy protein, isolated vegetable protein, soy protein concentrate, and structured protein fiber (SPF). Of course, soy bran, soy fiber, soy nuts, soy oil, soy sauce, soy grits, soy meal are also made from soybeans.

Unless you stick with certified organic foods, you will need to avoid any products with the ingredients listed above if you want to minimize your risk of GE foods. There are simply too much GE corn and soybean crops being raised for you to be sure that your non-organic foods are "GE safe".

Organic will help you avoid GE foods

Since the National Organics Program forbids the genetic modification of foods to be certified as organic, you can go a long way in avoiding GE foods by purchasing organic. For example, a food certified as 100% organic cannot contain any of the ingredients listed above if those ingredients have been derived from genetically engineered corn or soy.

"Non-GMO" or ""GMO-free" on food labels

Unfortunately, no labeling laws for GE foods exist in the US, even though England, France, Germany, New Zealand, Switzerland, China, Indonesia, and over 25 other countries require labeling of GE foods. (Some GE food crops are actually banned in many countries, including England, Japan, Brazil, Norway, India, and Thailand). In the US, the FDA has generally discouraged the use of terms like "GMO-free" or "non-GMO" on food labels and has expressed concern about these terms as being misleading. From the FDA's perspective, any statement that implies superiority of a "GMO-free" food is misleading because they note that there is no scientific evidence to support any increased health risks associated with GE foods. While I agree that scientific studies are sadly lacking in this area, I also believe that GE foods can logically be expected to bring with them added health risks, and I would like to see all GE foods and non-GE foods clearly labeled for this reason. However, until such labeling is widely adopted, the only way to lower your GMO risks is to stick with certified organic foods.

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