I have not used the microwave for more than 10 years. I heard about it and believe it too.
Microwave uses the adnormal wave lenght to cause the water molecule 共振 and release the energy. So that the things inside are heat up. This is not natural at all. This is radio active and thus I do believe it will cause problem to the food.
My c6 supports my idea and has not use the microwave for very long too. I especially will not use it to heat up food for baby/children.