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If that's not a weird joke, I really want to hear why you think marrow is going to absorb more microwaves than any other part of your body. Because it won't, it's an overall heat like sitting in a sauna. At low power it's warm, past that it's unpleasant, past that you have heat stroke.

bone marrow is one of the parts of the body that has high water content and thus would heat faster than others under radiation.

Sauna heat does not preferentially target liquid for heating.

Almost all of your body is high water content, and the heat will easily conduct the last little bit.

By the time you have to worry about specific non-brain parts being overheated, your overall temperature is such that you're braindead.

Actually, no, you can easily sustain heavy damage to certain organs without being brain-dead: https://en.wikipedia.org/wiki/Microwave_burn

I should have chosen my words to be more focused, I suppose. You can damage certain organs. You will not be cooking deep internal organs with an unshielded microwave. Not without cooking everything else.

Pretend my original comment ended with "Past that, you basically fell in a fire and it doesn't matter what is heating you." Is there anything wrong with that? Or the rejection of the idea that bone marrow is at risk?

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