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.
There are likely to be other possible causes, so ask your doctor about your symptoms. 1  Simple reasons for foot pain include: Over-use of feet. 2  Foot fracture Calcaneal fracture. 3  Iatrogenic foot disorder - see iatrogenic disorders.  Ankle conditions Ankle 1  pain. Joint conditions Arthritis.  Athlete's foot.