Sodium is known to raise blood pressure (and sometimes greatly), so doctors generally recommend limiting it. Check with your healthcare professional before you up your intake -- if you consume an amount that's not good for you, it can lead to heart failure (especially if you're older).
Other possible causes for foot, leg, and ankle swelling include certain medical conditions or body changes, such as: Natural hormonal changes: Fluctuating levels of estrogen and progesterone can cause reduced circulation in the legs, resulting in swelling.
Injury to the Feet and Ankles. Another cause of foot and ankle swelling is injury or trauma to the feet. When the tissues and muscles of the feet and ankles are strained or damaged, they will become inflamed and fill with blood, causing swelling.