However, state legislatures in Vermont and Connecticut moved ahead this month with votes to make food companies declare genetically modified ingredients on their packages. And supermarket retailer Whole Foods Markets Inc. ( WFM) has said that all products in its North American stores that contain genetically modified ingredients will be labeled as such by 2018.

Whole Foods says there is growing demand for products that don't use GMOs, with sales of products with a "Non-GMO" verification label spiking between 15% and 30%.
Copyright 2011 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

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