What is the relationship between sodium intake and kidney function in patients with hypertension?

High sodium intake in patients with hypertension is known to exacerbate the condition, leading to increased blood pressure that can further strain the kidneys. Sodium plays a crucial role in regulating blood pressure; when consumed in excess, it can cause the body to retain more fluid, which increases blood volume and, consequently, blood pressure. This heightened blood pressure not only affects cardiovascular health but also impacts kidney function. Over time, the sustained high blood pressure can lead to damage of the renal vasculature and glomeruli, accelerating the decline in kidney function.

This relationship underscores the importance of managing sodium intake as part of a comprehensive approach to managing hypertension and preserving kidney health. A reduction in sodium consumption can help lower blood pressure, decreasing the risk of progression of kidney disease and related complications, particularly in patients already diagnosed with hypertension.