Bio Question about excretory system. Please help.?

Question

Explain why a person may temporarily lose weight after chaning to a low-salt diet even without reducing Caloric intake.
However, please give me the source where you found this. 10 points for the best info. Thank you for your help.

Answer 1

The body tries to remain homeostatic, keeping fluids and electrolytes balanced. If you have too much salt intake, the body needs to dilute that salt by retaining more water.
Retaining more water can cause increased swelling in legs and feet and increase the blood pressure. Which can also result in weight gain from water retention.
This is why for someone with high blood pressure, they are advised to cut down on their salt intake. Then the opposite happens: with less salt, the body doesn't need as much water to properly dilute it, so it gets rid of any excess water - swelling and blood pressure go down; the weight of the water is lost from the body and a temporary weight loss may be seen. This effect is also seen with the high fat / protein diets.