How much water should I be drinking a day?
Around 3 to 4 litres of water can be taken per day provided kidney function is normal.
Last updated on 01 Apr 2021
Thirst is normally just the brain's way of warning that you're dehydrated because you're not drinking enough fluid. But excessive and persistent thirst (known as polydipsia) could be a sign of an underlying problem such as diabetes.
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