4. There may be problems with your liver.
Apart from its other functions, the liver produces a protein called albumin. This protein keeps fluid in our bloodstream and doesn’t let it leak into our tissues. Some liver diseases may lower the level of albumin in the blood, and cause fluid to pass from the bloodstream into the body’s tissues. In this case, swelling may not only occur in the feet and ankles, but in other parts of the body as well.