According to the World Health Organization, “Genetically modified (GM) foods are foods derived from organisms whose genetic material (DNA) has been modified in a way that does not occur naturally, e.g. through the introduction of a gene from a different organism.”.
Genetically modified foods have their advantages and their disadvantages, so it is important to look at both sides of the argument. One of the advantages of genetically modified foods is that they can make agriculture more efficient–many GM foods are able to grow a larger yield because they have been adjusted to be able to survive in a more diverse group of conditions than they originally were able to survive in. These plants have also been modified to resist pests and disease, which benefits the environment through a decreased need for pesticides. Plants can also be modified so that they contain more essential nutrients, which is useful for assisting malnourished populations.
Genetically modified foods also have disadvantages. For example, many people have raised concern over the safety of GM foods because not enough conclusive scientific research regarding the effects that GM foods may have on health has been conducted and accepted. Although GM foods have environmental advantages, they also have disadvantages: pests and diseases may adapt and become resistant to the genetic modifications, meaning that more harmful pesticides will be needed for the genetically modified plants to grow. In addition, GM foods could mean losing biodiversity.
I think the main issue when it comes to genetically modified foods is the impact of introducing human-made organisms into the environment.