I'm not a biologist, either, but there are e.g. repair enzymes, which may denaturate and lose their function when heated. Reader "Richard2010", comment #2, name

I'm not a biologist, either, but there are e.g. repair enzymes, which may denaturate and lose their function when heated. Reader "Richard2010", comment #2, named a few more mechanisms for causing cancer using non-ionizing radiation. Whether they are practical, I don't know.