Table salt is a combination of two minerals - sodium and chloride. Your body needs some sodium to work properly. It helps with the function of nerves and muscles. It also helps to keep the right balance of fluids in your body. If you have too much sodium, it builds up in your blood. This can lead to high blood pressure. High blood pressure can lead to other health problems.
Most people in the U.S. get more sodium in their diets than they need. A key to healthy eating is choosing foods low in sodium.