Genetically modified food
Genetic modification or engineering involves transferring DNA derived from one organism and inserting it into the permanent genetic code of another. Animals, crops, fish, and even insects have been genetically modified, despite numerous studies that have shown that genetically modified foods can pose serious risks to consumers, animals and the environment.
Human health effects can include higher risks of toxicity, allergenicity, antibiotic resistance, immune-suppression and cancer.
Of the environmental impact, the Center for Food Safety says "the use of genetic engineering in agriculture could lead to uncontrolled biological pollution, threatening numerous microbial, plant and animal species with extinction, and the potential contamination of non-genetically engineered life forms with novel and possibly hazardous genetic material."
GM foods are not required to be labeled. Choosing organic is the best way to avoid GM ingredients, since genetic modification is not allowed in organic food production.