@alexisbushnell Rust ingested in small amounts is said to be non-harmful, however, large amountes can lead to digestive upset, skin and eye irritation, and probably other things that aren't indicated on every health site on the topic. Iron oxide is not the same as iron in the blood. Strongly suggest replacing that microwave, as well as your source of information from wive's tails to evidence-based, scientific health information sources. The $100-300 extra expense is worth more than the health issues you are knowingly exposing yourself to. And if someone offered a free microwave as a replacement, its simply pure stupidity to refuse it, given it is evaluated to function and not cause other health issues through malfunction or defect.
Adam MacLeod
@adam@fedi.adamm.cc