Drinking the oft-recommended eight glasses of water a day can held to prevent or slow the onset of heart failure and its precursor, a study has concluded.
Experts from the US National Institutes of Health monitored the health and so-called serum sodium concentrations of 15,792 initially middle-aged people over 25 years.
Serum sodium concentration is a measure of hydration habits based on the amount of sodium in the blood — as the less you drink, the more concentrated it becomes.
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