About the data: We used the family income data from the 2013 American Community Survey. This counts only families, which the government defines as households with two or more people related by birth, marriage or adoption. The graph focuses on families living in the country's 30 most populous cities.
The higher pressure causes swelling in the legs and feet. Congestive heart failure, a condition in which the heart can no longer pump efficiently, causes fluid buildup in the lungs and other parts of the body. Swelling is often most visible in the feet and ankles. Pregnancy can cause edema in the legs as the uterus puts pressure on the vena cava, a major blood vessel that returns blood to the heart from the legs. Fluid retention during pregnancy also can be caused by a more serious condition called preeclampsia.
A very common place to see edema is in the feet, ankles and lower legs. Edema is fluid build up which may occur in any part of your body. However, due of the effects of gravity, the fluid more commonly appears as painless swelling in the lower legs.ommon Causes of Peripheral Edema. As a person gets on in years, he or she is more likely to have a gathering of edema fluid in their lower legs when they stand or sit too long. They may also see a tightness and swelling the shoes and socks are removed at the end of the day.