Genetically modified (GM) foods are foodstuffs produced from genetically modified organisms (GMO) that have had their DNA altered through genetic engineering. GM Foods were first put on the market in the early1990s. The most common modified foods are derived from plants: soybean, corn, canola and cotton seed oil and wheat.Controversies surrounding GM foods and crops commonly focus on human and environmental safety, labeling and consumer choice, intellectual property rights, ethics, food security, poverty reduction, and environmental conservation.