I've seen this too, and people asserting that the email is a hoax. Just had a quick google and found several links stating that they tried to replicate the experiment and both plants were fine.
There are a few analyses of what microwaves do to food, and although it is different to convection cooking, it does not appear to be carcinogenic etc - in fact sometimes it's better (e.g. if cooking meat vs blackened meat)
I do believe in quarternary protein structures and their (unknown) microbiological effects - I anticipate that microwaving denatures these in ways different to convection cooking. I expect this will have a differential impact on health - but the main thing to be wary of seems to be:
a) what container you use
b) frequency of use/ ingestion
c) animal foods (e.g. milk) and fats
thanks for your thoughts Elaine, perhaps I didnt really think it through. have never owned a microwave so cant replecate the experiment.
Someone should try it :)
Like most of us, I have heard rumours that microwaved food is bad for us in various ways. No one so far that I have read - and I haven't really researched this topic - has been able to say why. One why that I ask, is: cooked water? We don't heat water for plants never mind boil it. So what is the point of this experiment?
I think the issue is more about what you use a microwave to cook in. It can do some nasty things to plastics.