According to what I've read, you are supposed to avoid plastics made with BPA, as that is a known carcinogen. However, I don't trust any other kind of plastic to be carcinogen free, either. You are best off microwaving in glass containers, or paper plates, and paper bowls. Although I do still sometimes microwave foods in plastic, I have reduced my use of it, as I am concerned about it. I am also planning to buy more glass ware to use in the microwave, so that I can reduce my use of plastic ware in the microwave even more.
I also have to buy a step ladder, so that I can reach the upper kitchen cupboards to store more stuff, including the new glass ware I plan to get. I don't have enough storage lower down, and can't reach the higher levels--I'm a little short. I have bad knees so I can't scramble up on the counters, and I weigh too much to climb on the chairs. Someone recently told me where to get heavy duty step ladders, so that's now on my household list.
So eat safely--avoid using plastic in the microwave as much as possible.
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If a man does not keep pace with his companions, perhaps it is because he hears a different drummer.
Let him step to the music which he hears, however measured, or far away.--Henry David Thoreau