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.
Foot and ankle swelling can be caused by a variety of factors, ranging from skin-deep injuries to muscular-bone injury. Some reasons for swelling may be: Sprained ankle or joint. Sunburn. Allergic reaction to insect bites or plants. Thrombosis (blockage in veins) Lymphatic obstruction. Fractured or broken bones.