Firstly, overcooked food, regardless of whether it's heated in a microwave or not, can lead to carcinogenic substances. For instance, when vegetables are fried to the point of burning, those who are aware of basic living knowledge know that charred food is inedible. Therefore, the production of harmful substances due to overcooking with a microwave is not the fault of the microwave itself.

Next, pay attention to the containers holding the food. Some plastics or colored ceramics, which are not suitable for high temperatures, may release harmful substances into the food when heated in the microwave. Containers suitable for microwave use are typically marked with a microwave-safe symbol.

Microwave-heated food does not leave radiation residue on the food. This is different from the radiation caused by the leakage of radioactive substances from the Fukushima nuclear power plant in Japan.

Leakage of radioactive material can contaminate various foods near a nuclear power plant, including vegetables, fruits, rice, meats, and fish. Microwaves are not nuclear reactors.