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Thirsty People Feel More Pain
Bifurcati writes "Being thirsty makes you more sensitive to pain, according to a recent study. By simultaneously doing brain scans, new areas of the brain were activated when both pain and thirst were present, apparently making the pain more "painful" - perhaps a survival method so that pain is prioritized over thirst. They'd like to do more research, but ethical issues make it tough - even these subjects had to spend three hours being poked and prodded!"
RTFA, this was a study on people who still have their brain.