What is HDL commonly referred to as?

High-Density Lipoprotein (HDL) is commonly referred to as "good cholesterol" because it plays a protective role in cardiovascular health. HDL is responsible for transporting cholesterol from the tissues and arteries back to the liver, where it can be processed and eliminated from the body. This process helps to reduce the risk of plaque buildup in the arteries, which can lead to atherosclerosis and increase the likelihood of heart disease.

In contrast to HDL, Low-Density Lipoprotein (LDL) is often termed "bad cholesterol" due to its association with increased risk of cardiovascular diseases when present in high levels, as it contributes to the buildup of plaque in the arteries.

Essential fatty acids and triglycerides, while related to fat metabolism and overall health, do not carry the same implications for cholesterol as HDL does. Therefore, the association of HDL with positive health outcomes justifies its label as "good cholesterol."