This is an interesting article about how sodium affects the bodies’ water stores, but, as mentioned in the article, the study needs to be replicated. And research is needed to determine how these findings may be used in treatment of kidney disease and high-blood pressure.
I’d be curious to see follow-up research on whether drinking plenty of water when you’re not thirsty would reduce the glucocorticoid levels associated with a higher-salt diet.
That would be interesting. And this really needs to be explained to people:
"Everyone has heard the advice, “Drink eight 8-ounce glasses of water a day.” That’s about 1.9 liters, which isn’t that different from the Institute of Medicine recommendations. Although the “8 by 8” rule isn’t supported by hard evidence, it remains popular because it’s easy to remember. Just keep in mind that the rule should be reframed as: “Drink eight 8-ounce glasses of fluid a day,” because all fluids count toward the daily total."
On the other hand, that should not be taken as “drink at least a half gallon of soda pop every day.”