U.S. doctors online nowAsk doctors free
Bronx, NY
A 73-year-old female 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?

2 doctor answers5 doctors weighed in
Dr. Marc Yune
Facial Plastic Surgery 31 years experience
Dehydration: If rehydrating helps it is probably dehydration which can indicate certain issues such as diabetes or low blood pressure.
Dr. Adam Lewis
Neurosurgery 36 years experience
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.
Last updated Nov 28, 2017

Disclaimer:

Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.