A member asked:

Why does dehydration cause (rather painful) headaches?

A doctor has provided 1 answer
Dr. John Munshower answered

Specializes in Family Medicine

Head aches: The blood flow that normally is sent to your brain may be decreased as it is also being used to supply the vital organs as you become dehydrated. When the brain does not get it required nutrients through an adequate, well hydrated host, it will suffer and tell you by causing a head ache at times. Stay well hydrated, eat well, feel well, best wishes.

Answered 4/9/2014

4.2k views

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