The heated dish itself in a microwave is not harmful to us, as long as it is made of microwave-safe materials. Microwave-safe dishes are designed to withstand the heating and microwave radiation without leaching harmful chemicals into your food or causing damage to the dish itself.
However, there are some considerations to keep in mind to ensure safety while using a microwave:
Microwave-safe materials: Use dishes, containers, and wraps labeled as microwave-safe. Avoid using dishes with metallic elements, as they can cause sparks and damage the microwave.
Avoid non-microwave-safe materials: Certain materials, like some types of plastics or dishes with metallic accents, can release harmful substances when exposed to high heat. Avoid using them in the microwave.
BPA concerns: If you're using plastic containers, choose those labeled as BPA-free to reduce potential health risks.
Uneven heating: Microwaves can heat food unevenly, creating hot spots. Stir or rotate food during the microwaving process to ensure even heating.
Steam and pressure build-up: Be cautious when microwaving items with sealed or airtight packaging, as steam and pressure can build up and cause the packaging to burst.
Microwave radiation: Microwave ovens generate electromagnetic radiation, which is contained within the oven itself. As long as the microwave is properly sealed and in good working condition, the radiation should not pose a risk.
To summarize, the heated dish itself is not harmful if it is microwave-safe. Just make sure to follow the recommended guidelines and precautions to ensure safe usage of your microwave oven.