How does sodium affect blood pressure?

High sodium intake can lead to increased blood pressure because sodium plays a crucial role in regulating fluid balance within the body. When sodium levels are elevated, it causes the body to retain more water in order to dilute the sodium concentration. This increased fluid volume in the bloodstream can raise blood pressure as the heart has to pump harder to move the added volume through the blood vessels. Over time, consistently high sodium intake can contribute to the development of hypertension, which is a significant risk factor for cardiovascular diseases. Understanding this relationship is vital for managing dietary habits, especially for individuals with or at risk for hypertension.