What does a decreased HDL cholesterol concentration indicate?

A decreased HDL cholesterol concentration indicates an increased risk of heart disease. HDL, or high-density lipoprotein, is often referred to as "good" cholesterol because it helps remove other forms of cholesterol from the bloodstream. It plays a crucial role in reducing the risk of atherosclerosis, a condition characterized by the buildup of plaque in the arteries, which can lead to heart attacks or strokes. When HDL levels are low, it suggests that the body is less capable of managing cholesterol efficiently, increasing the risk of cardiovascular problems.

Higher levels of HDL are associated with better cardiovascular health, as they contribute to the transport of cholesterol to the liver for excretion from the body. Therefore, low HDL levels signify an unfavorable balance in lipid metabolism and may contribute to deteriorating heart health and increased vulnerability to cardiovascular diseases.