Extensive daily microwave oven use is generally considered safe when used according to the manufacturer's instructions. Microwave ovens are designed and regulated to emit a specific frequency of electromagnetic waves (microwaves) that interact with water molecules in food, generating heat. While there are some misconceptions and concerns about microwave ovens, they have been widely studied and found to be safe for heating and cooking food.
Microwaves primarily heat the water molecules in food, causing the water to vibrate and generate heat. This heat then transfers to the rest of the food, resulting in cooking. Microwave heating is a form of moist heat, and it can effectively heat food without significantly altering its nutritional composition.
However, it's important to note that microwaves do not substantially modify the structure of food molecules beyond what occurs during conventional heating methods. Cooking or heating food, whether in a microwave or using other cooking methods, can cause chemical changes such as denaturation of proteins or degradation of certain nutrients due to the application of heat. These changes are inherent to cooking itself and not specific to microwaves.
When used properly, microwaves are generally safe and do not make the food itself harmful or unhealthy. In fact, microwave cooking can help retain more nutrients compared to some other cooking methods because it is a faster cooking process with shorter exposure to heat and water.
However, it's essential to use microwave-safe containers and follow proper cooking instructions to ensure safety and avoid potential hazards, such as uneven heating or the risk of burns from hot food or containers.
In summary, extensive daily microwave oven use, within reasonable limits and following safety guidelines, is generally considered safe and does not make food harmful or unhealthy. The primary concerns related to microwave ovens are typically associated with improper use, such as using non-microwave-safe containers or overheating food, which can lead to burns or other accidents.