I’ve come to understand that the reason humans shouldn’t drink seawater is that it requires more water to get rid of that salt through urine. But if salt is a necessary nutrient, why would the body need to get rid of it at all? If your body were low on salt, what it be good for you to drink seawater?
Edit: added follow-up hypothetical question
In: Biology
The body needs SOME salt, but like every chemical your body requires for continued life, it needs it in moderation.
The issue with salt is that water flows towards it, which causes your blood to do the same. if the saturation is too high that salt gets stored and draws blood from where it’s needed
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