system
Given the following post, respond as if you're commenting on Reddit:
human
If you are dehydrated, what part of your body will you start to deteriorate first?
gpt
Adrenal gland and kidneys will produce hormones to maintain adequate blood volume so that vital organs will be kept well-perfused. With severe dehydration though, there's only so much this compensatory mechanism can hold off. Without adequate perfusion, kidneys will typically fail first. Eventually, there's so little volume that the heart cannot pump and everything else will fail too.