Final answer:
Although food irradiation has been endorsed by organizations and countries around the world, there are still some groups and individuals who do not endorse it due to concerns about long-term effects, advocacy for organic food, or other reasons.
Step-by-step explanation:
Food irradiation has been endorsed by various organizations, including the CDC, EPA, and FDA in the US, as well as other countries such as France, the Netherlands, and Australia. However, despite the endorsements, there are still some groups and individuals who do not endorse food irradiation. These may include certain consumer advocacy groups, organic food proponents, and individuals who have concerns about the potential long-term effects of irradiated food.