Should questions about nutritional composition be off- or on-topic?
I've posted a question about nutritional differences in sea and table salt which also corners the question if one is "better" than the other one.
Do we want questions related to nutrition to be off-topic or on-topic? Where are the boundaries to decide when it's off-topic?
I think that completely allowing questions about nutritional differences or composition of different kinds of food could lead to questions like "Are apples better than oranges?" which is practically unanswerable as both fruits are completely different in their chemical makeup and cultural history and factors coming from the person asking would have to be considered to thoroughly answer it.
For the question I've posted, I tried to ask a question about the comparison of the same kind of food and its variations. Is this reasonable or should this also be off-topic?
What do you think?