What is the purpose of a low-sodium diet in managing heart failure?

A low-sodium diet is specifically implemented in managing heart failure primarily to decrease blood volume. Sodium has a significant impact on fluid retention in the body. When sodium intake is high, the kidneys retain more water in order to balance the sodium levels, which increases blood volume. In the context of heart failure, where the heart’s ability to pump effectively is compromised, reducing blood volume can alleviate some of the burdens on the heart. It helps in controlling blood pressure and can diminish symptoms associated with fluid overload, such as edema and shortness of breath.

By decreasing blood volume through a low-sodium diet, the heart does not have to work as hard to circulate blood, which can lead to improved outcomes for patients in managing their condition. The reduction in volume also helps to minimize fluid accumulation in the lungs and other tissues, making it easier for patients to breathe and enhancing their overall quality of life.