Headaches and water: Check your sodium by having a physician order a blood test for it. If you drink a lot of water, and not ingesting a lot of sodium, you may have a low sodium level. Why do you think you are preventing dehydration by drinking large amounts of water? Are you having diarrhea, being exposed to a hot environment or urinating a lot? If not, you probably such drink to thirst.
Answered 2/12/2014
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