But in the long run, it makes us LESS thirsty, and more hungry! That’s according to Vanderbilt University. In fact, within 24 hours of a high-salt meal, our thirst drops drastically, because sodium produces urea, which increases water retention. And study participants on a high-salt diet drank less water, and complained more often of hunger, compared to those on lower-salt diets. The reason? Because the body uses a lot of energy to produce urea, which then makes us crave extra calories to compensate. So, if you’re feeling hungrier than usual, cut back on salt and drink more water.