

Similar story, my ex had health issues most of her life and her doctors kept missing what was going on, partially because they didn’t believe her about some things. One doctor deciding to investigate instead of dismissing saved her life when he found out her birth control was killing her, though her gp at the time still wanted her to finish the course.
That same gp also didn’t believe she was actually dislocating her limbs until she finally just did it in front of him and he changed his tune right away (though still didn’t really help).
Later she had a new better gp as well as a good idea of what chronic issue she had, but he still resisted when she was pushing for a diagnosis. I just came along for one appointment and when he said something like “this isn’t a clear sign that you have <condition>”, I asked what evidence was he considering that pointed at her not having it. He then admitted he didn’t know much about the condition and would do some research. After doing some reading, he was quick to give her a referral to a clinic that specialized in the condition because apparently he needed to be asked about his reasoning from a man to even bother learning about the condition that matched her experience very well and that she was later diagnosed with a severe form of.
I think AIs will be great for diagnosis because they will be able to cut out the biases doctors have against ever suspecting a rare case or giving women any consideration deeper than “stress”.
We don’t absorb everything completely, so some passes through unabsorbed. Some are passed via bile or mucous production, like manganese, copper, and zinc. Others are passed via urine. Some are passed via sweat. Selenium, when experiencing selenium toxicity, will even pass through your breath.
Other than the last one, most of those eventually end up going down the drain, either in the toilet, down the shower drain, or when we do our laundry. Though some portion ends up as dust.
And to be thorough, there’s also bleeding as a pathway to losing nutrients, as well as injuries (or surgeries) involving losing flesh, tears, spit/boogers, hair loss, lactation, finger nail and skin loss, reproductive fluids, blistering, and mensturation. And corpse disposal, though the amount of nutrients we shed throughout our lives dwarfs what’s left at the end.
I think each one of those are ones that, due to our way of life and how it’s changed since our hunter gatherer days, less of it ends up back in the nutrient cycle.
But I was mistaken to put the emphasis on shit and it was an interesting dive to understand that better. Thanks for challenging that :)