What are the potential side effects of drinking too much still mineral water?
For most healthy people, the main risk of drinking far too much still mineral water is the same as for any water: diluting blood sodium (hyponatremia), which can cause headache, nausea and confusion. We found no official source listing side effects that are specific to still mineral water, but its mineral level is on the label and can matter if you are on a restricted diet.
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In this article
Can you drink too much still mineral water?
Yes, as with any water. Very large amounts in a short time can lower the sodium concentration in the blood, a condition called hyponatremia. MedlinePlus lists its symptoms as confusion, irritability, headache, fatigue, loss of appetite, nausea or vomiting, and muscle weakness, spasms or cramps. Severe cases can cause convulsions, reduced consciousness, coma or death, and a sharply dropping sodium level is described as a life-threatening emergency. It is more dangerous when it develops within 48 hours than when it develops slowly.
What does mineral water contain?
In the US, FDA rules say mineral water must come from a protected underground source and contain at least 250 parts per million of total dissolved solids, with no minerals added. If total dissolved solids are below 500 ppm the label must say low mineral content; above 1,500 ppm it must say high mineral content. So the label tells you roughly how mineral-rich a bottle is.
Is mineral water bad for you in large amounts?
We found no official source describing harm from the minerals in still mineral water at normal drinking amounts. If your doctor has put you on a low-sodium diet, or you have kidney or heart disease, check the label for sodium and ask a doctor or pharmacist how much water and which type is right for you.
How much water is normal?
The NHS Eatwell Guide recommends about 6 to 8 cups or glasses of fluid a day, more in heat, during long periods of activity, when pregnant or breastfeeding, or when unwell. Aim for clear pale yellow urine as a simple sign you are drinking enough.
When to get help
- Headache, nausea or confusion after drinking a lot of water quickly: contact a health provider.
- Endurance exercise: ask about a sports drink with electrolytes rather than only plain water.
- Any seizure or severe confusion: call emergency services.
This is general information, not medical advice.
People also ask
What happens if you drink too much mineral water?
Too much water too fast can dilute blood sodium (hyponatremia), causing headache, nausea, confusion and in severe cases convulsions. See a doctor if symptoms appear.
How much total dissolved solids must mineral water have?
In the US, at least 250 ppm total dissolved solids, with no minerals added. Labels must say low mineral content below 500 ppm and high above 1,500 ppm.
Is mineral water healthier than tap water?
We found no official source saying so. Both count toward your daily fluids; pick the one you will drink and check the label if you are on a restricted diet.
Sources
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