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.
Quick Answer. Common causes of swelling in the legs and feet include poorly functioning veins, pregnancy complications, heart disease, infections and blood clots, according to WebMD. In some cases, swollen feet and ankles occur as a normal result of heavy walking or as a side effect from certain medications. Continue Reading.