This means that endocrine gland function improves. Fluid retention is alleviated as stored water is lost. More fat is used as fuel. Because the liver is free to metabolize stored fat, natural thirst returns and there is a loss of hunger almost overnight. If you stop drinking water, your body fluids will again be thrown out of balance and you may experience fluid retention, unexplained weight gain, pain and a loss of thirst. To remedy this situation, you will need to resume drinking enough water