What is the fine-grained topic of the following text: The value or detriment of genetically modified, or bio-engineered, food is an intensely disputed issue in the U.S. and in Europe, where many countries have banned foods made from genetically modified organisms, or GMOs. Only return the topic.
The debate over the value or detriment of genetically modified (bio-engineered) food in the U.S. and Europe.