You make what I would call a poor assumption that people, on average, can tell when they're under mild medical duress.
There are people who walk around until they suddenly have a child, or die of an organ failing, and have no idea up til that point.
There are people who walk around until they suddenly have a child, or die of an organ failing, and have no idea up til that point.
But we could be vitamin deficient, in various columns.
We could be having low-level allergic reactions, caused by environmental factors we're too busy (or dumb?, sometimes?) to correlate right away.
We could have an infection, or a cancer, hollowing out a part of our body, and not quite know what that feels like.
Tons of things like that.