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.
Causes of Swelling. Swelling in the feet is typically caused by a buildup of fluids. Also called edema, swelling can be brought on by tight, uncomfortable shoes. Diabetes or a medical condition that causes fluid retention may also make you vulnerable to foot swelling.