How does increased blood viscosity affect circulation?

Increased blood viscosity can significantly impact circulation, primarily by increasing resistance to blood flow within the blood vessels. When the blood becomes thicker, it requires more effort from the heart to pump it through the circulatory system. This increased resistance can lead to higher workloads on the heart, resulting in strains that may compromise its function over time.

This increased viscosity can occur due to various factors, such as dehydration, high levels of certain proteins, or other medical conditions that might influence the composition of the blood. As resistance rises, the heart must exert more pressure to maintain adequate circulation and ensure that oxygen and nutrients are delivered effectively to tissues throughout the body. Over time, this can lead to various cardiovascular issues, including hypertension, heart failure, or other complications. Thus, the correct understanding of this physiological response illustrates how vital it is for the cardiovascular system to maintain an optimal balance of blood viscosity for healthy circulation.