No, a microwave does not change the DNA of food. Microwaves work by emitting electromagnetic waves that excite water molecules and other polar molecules in the food, causing them to vibrate rapidly, which generates heat. This heat cooks or reheats the food.
DNA is a complex molecule found in living organisms, including plants and animals. Microwaves do not emit ionizing radiation, which is the type of radiation that can break chemical bonds and cause changes to DNA. Instead, microwaves use non-ionizing radiation, which is generally safe and does not have enough energy to directly alter the DNA of food.
The main concern with microwaving food is the potential for uneven heating, which can create hot spots and may lead to inadequate cooking or reheating in certain areas. To ensure food is cooked thoroughly and safely, it is essential to follow recommended cooking times and stirring or rotating the food during the process.
In conclusion, microwaving food is generally safe and does not alter the DNA of the food. However, as with any cooking method, it's important to handle and prepare food properly to ensure it is cooked thoroughly and free from any harmful pathogens.