What can dehydration lead to concerning blood pressure?

Dehydration can lead to an increased thickness of blood, also known as increased blood viscosity. When the body loses fluids, either through sweat, urine, or inadequate intake, the volume of plasma in the bloodstream decreases. This reduction in plasma leads to a higher concentration of red blood cells and other components, making the blood thicker.

Thicker blood can impede normal circulation, as it requires more effort for the heart to pump it through the bloodstream. This increased viscosity can contribute to elevated blood pressure because the heart must work harder to overcome the resistance posed by the thicker blood passing through the blood vessels. Understanding this mechanism is crucial for recognizing how hydration levels can significantly impact cardiovascular health and blood pressure regulation.