不是味道的问题.是对身体和环境可能不好.抄一段from: en.wikipedia.org/wiki/Genetically_m

A section from: http://en.wikipedia.org/wiki/Genetically_modified_food

Genetically engineered crops and foods are controversial. Debate commonly focuses on the long-term health effects for those who consume GM foods, environmental safety, labeling and consumer choice, intellectual property rights, ethics, food security, poverty reduction, environmental conservation, and potential disruption or even possible destruction of the food chain. Proponents claim the technology to be a boon for the human race, while critics believe it to be a potential or actual health or ecological disaster.