Iron deficiency is the most common nutritional deficiency in North America, according to the United States Centers for Disease Control and Prevention. Iron is part of every cell in the body and is an active participant in several important body functions, such as producing the hemoglobin that is in your blood.

Swollen joints, knees and ankles after running can be caused by a number of different issues, which means that the road to healing may be different for everyone. In most cases, fluid collecting around the ankle and knee joints may be to blame.

Many women suffer from swollen ankles during pregnancy, but it also is possible to suffer from swollen ankles after you give birth. Swelling is sometimes referred to as edema and is caused by fluid and blood retention.

Painless swollen ankles occur relatively commonly, especially among older adults. The condition represents an accumulation of excess fluid in the soft tissues of the lower legs. A variety of diseases and abnormalities can lead to painless ankle swelling.

Many people experience swollen ankles. This swelling -- also called ankle edema -- can have several causes ranging from minor to significant underlying health problems. See your doctor for an accurate diagnosis if you experience ankle swelling.

A diet that is too high in sodium can contribute to many health problems, including fluid retention in various areas of the body, including the ankles, weight gain, high blood pressure and heart disease. Each individual's sensitivity to sodium is different.

The American Podiatric Medical Association estimates that in just an average day of walking, several hundred tons of pressure are exerted upon your feet. Inflammation and pain in the feet can result from this continuous and excessive force.

Swelling occurs because of excess fluid that collects in the tissues of the body. The most common places for swelling are the hands, feet, arms, legs and ankles, as reported by MayoClinic.com. Many medical conditions, medications and lifestyle activities cause swelling in the extremities.

Swollen ankles are caused by fluid building up around the foot and ankle. Common causes of ankle swelling include injury, age, pregnancy, extended standing and long drives or flights. Exercising the swollen ankles can help pump the excess fluid out and reduce the swelling.