Information Policy and Genetically Modified Food: Weighting the Benefits and Costs (di Mario F. Teisl, Julie A. Caswell) - ABSTRACT: The labeling of genetically modified foods is the topic of a debate that could dramatically alter the structure of the US and international food industry. The current lack of harmonization of policy across countries makes Gmf labelling an international trade issue. The US and Canada do not require Gmfs to be labeled unless the Gmf is significantly different than the conventional food or the Gmf presents a health concern. However, many other countries are requiring Gmfs to be labeled. This paper discusses empirical work on the sources and magnitude of benefits and costs from labeling programs. Information Policy and Genetically Modified Food: Weighting the Benefits and Costs - The labeling of genetically modified foods is the topic of a debate that could dramatically alter the structure of the US and international food industry. The current lack of harmonization of policy across countries makes Gmf labelling an international trade issue. The US and Canada do not require Gmfs to be labeled unless the Gmf is significantly different than the conventional food or the Gmf presents a health concern. However, many other countries are requiring Gmfs to be labeled. This paper discusses empirical work on the sources and magnitude of benefits and costs from labeling programs.