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.
Uncomfortable shoes that are tight are a common cause for swelling in the feet and legs. Tight footwear restricts blood circulation, causing a buildup in fluids in the surrounding areas. Avoid the discomfort of shoes that are too tight by wearing the correct shoe size.