Fluid retention also known as edema can be responsible for rapid, unexplained weight gain, bloating and puffiness in the face, limbs, hands, ankles or abdominal area. Too much sodium, or salt, can cause immediate water retention.
This is a common health issue, and the side effects are a sense of low energy, feeling lethargic, unmotivated and tired and due to this temporary weight gain clothes will fit tighter than usual.
Sodium plays a key role in regulating water in the cells and affects the amount of water our bodies retain. This is because the body needs to keep its sodium-to-water ratio balanced to function properly and will hold on to water if too much salt is consumed.
And while it can increase your body weight temporarily, it does not affect the amount of body fat. This is one of the reasons why the number on the scale can not be trusted as far as weight gain or weight loss is concerned.
To eliminate the excess fluids, follow a healthy diet of natural foods, limit salt/sodium intake. If your water retention persists, consult your physician