Dehydration causes water retention by slowing the metabolism, according to SFGate. Eating salty foods results in water retention experienced as increased thirst or bloating. Drinking plenty of water and staying adequately hydrated allows organs such as the kidneys and liver to properly dispose of toxins and excess amounts of fluid.
The body uses water to transport nutrients and toxins across various cell membranes, as well as to dissolve electrolytes and prevent dangerous toxins from causing damage through over-concentration, explains SFGate.
Staying fully hydrated supports weight loss, reduces constipation and eases water retention through release in the stool, according to SFGate. The kidneys require an abundance of water to flush toxins out of the blood and produce urine. Dehydration places an extra burden on the liver to dispose of excess waste in the bloodstream as opposed to performing its regular functions, which includes burning and disposing of excess fat. Additionally, sufficient hydration allows water to distribute itself across all areas of the body, improving the quality of muscles and skin tone.
Maintaining optimal hydration is achieved by drinking as much as a gallon of water a day, states SFGate. More specifically, individuals should strive to drink at least half their body weight in ounces.