Clinical Nutritionist Practice Test 2026 - Free Practice Questions and Study Guide

The role of HDL (high-density lipoprotein) cholesterol in the body is primarily focused on its function in reverse cholesterol transport. This process involves the transportation of cholesterol away from the body's tissues and back to the liver, where it can be processed and eliminated from the body. This is crucial for maintaining a healthy balance of cholesterol levels in the body, reducing the risk of cardiovascular diseases.

HDL cholesterol helps to clear excess cholesterol from cells and blood vessels, which can prevent plaque buildup and promote overall heart health. By effectively transporting cholesterol to the liver for removal, HDL acts protectively, making it an important factor in cardiovascular wellness.

In contrast to this function, the other options do not accurately describe HDL's role. While some lipoproteins deliver cholesterol to cells for energy, that function is more aligned with LDL (low-density lipoprotein). Converting cholesterol to triglycerides is not a role of HDL; rather, triglycerides are stored fats utilized for energy. Additionally, HDL does not promote increased cholesterol production in the liver; its main function is to facilitate cholesterol removal, maintaining healthy levels in the bloodstream.