How does water retention work?
In: Biology
In the body? Without getting into hardcore renal physiology, if you have a higher level of total sodium in the body, you tend to retain more water (passively as water follows the osmotically active ions and actively to maintain the homeostatic plasma osmolarity around 280 mOsm). So if you take to much salt in your food, chronically, you’ll tend to retain more water. Sodium chloride isn’t the only determinant, other ions are also involved, but it’s the biggest factor.
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