A member asked:

I drink 7 glasses of water a day, sometimes a get a headache, but after i drink it does go away. could this be anything else?

5 doctors weighed in across 2 answers
Dr. Marc Yune answered

Specializes in Facial Plastic Surgery

Dehydration: If rehydrating helps it is probably dehydration which can indicate certain issues such as diabetes or low blood pressure.

Answered 1/13/2016

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Dr. Adam Lewis answered

Specializes in Neurosurgery

Water intoxication: If you drink 7 glasses of water a day, it is unlikely that you have headaches due to dehydration. Rather drinking too much water can cause swelling of the brain cells (due to low salt) and headaches. Too much water washes out the kidneys which leads to an inability to concentrate fluid properly.

Answered 11/28/2017

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