Irradiation of food products is one way to limit the risk of germ contamination and food poisoning. In the United States, some foods, such as spices, are routinely irradiated. Irradiated meats and other foods are also widely available. Because radiation is known to cause cancer, there has been concern that food irradiation may present a cancer risk. However, radiation does not remain in foods that have been irradiated

According to American Cancer Society... Learned something new

This article might help: https://www.fda.gov/food/buy-store-serve-safe-food/food-irradiation-what-you-need-know

microwaves are low energy EM waves they heat the food but does not cause radioactivity which is caused by HIGH EM waves as gamma nd x rays they removes the electron nd produces ions that can cause cancer