Related Experiment Video
Updated: Mar 21, 2026

Quantification of the Potential Impact of Glyphosate-Based Products on Microbiomes
Published on: January 10, 2022
What consumers don't know about genetically modified food, and how that affects beliefs
Brandon R McFadden1, Jayson L Lusk2
1Department of Food and Resource Economics, University of Florida, Gainesville, Florida, USA; and brandon.mcfadden@ufl.edu.
Abstract:
In the debates surrounding biotechnology and genetically modified (GM) food, data from consumer polls are often presented as evidence for precaution and labeling. But how much do consumers actually know about the issue? New data collected from a nationwide U.S. survey reveal low levels of knowledge and numerous misperceptions about GM food. Nearly equal numbers of consumers prefer mandatory labeling of foods containing DNA as do those preferring mandatory labeling of GM foods. When given the option, the majority of consumers prefer that decisions about GM food be taken out of their hands and be made by experts. After answering a list of questions testing objective knowledge of GM food, subjective, self-reported knowledge declines somewhat, and beliefs about GM food safety increase slightly. Results suggest that consumers think they know more than they actually do about GM food, and queries about GM facts cause respondents to reassess how much they know. The findings question the usefulness of results from opinion polls as a motivation for creating public policy surrounding GM food.-McFadden, B. R., Lusk, J. L. What consumers don't know about genetically modified food, and how that affects beliefs.
Related Concept Videos
What is Genetic Engineering?
Transgenic Plants
The first-ever transgenic plant was a tobacco plant developed in 1983 that showed resistance against the tobacco mosaic virus. Since then, many transgenic plants have been developed and commercialized for improving the agricultural, ornamental, and horticultural value of a crop plant. Transgenic...
Transgenic Organisms
Transgenic Organisms
Confirmation Biases
Genetic Screens
Forward genetic screens
Forward or “classical” genetic screens involve creating random mutations in an organism’s DNA using radiation, mutagens, or insertion of additional bases, which...

