What is the primary function of HDLs (High-Density Lipoproteins)?

The primary function of HDLs, or High-Density Lipoproteins, is to deliver cholesterol to the liver. This process is crucial for various reasons. HDLs help in the removal of excess cholesterol from the bloodstream and tissues and transport it back to the liver. The liver can then process this cholesterol for different purposes, such as bile production or conversion to other compounds, which is vital for maintaining a healthy balance of cholesterol levels in the body.

This function is particularly significant in preventing the buildup of plaque in blood vessels, which is a risk factor for cardiovascular diseases. The "good" cholesterol, as HDLs are often referred to, plays an essential role in heart health by helping to manage cholesterol levels effectively. This distinguishes their function from that of other lipoproteins, which may have different roles in lipid transport and storage in the body.