What is the relationship between cholesterol and heart disease?

The connection between cholesterol and heart disease primarily revolves around the types of cholesterol present in the bloodstream. High levels of low-density lipoprotein (LDL) cholesterol are significant contributors to the development of heart disease. LDL cholesterol is often referred to as "bad" cholesterol because it can lead to the buildup of plaque in the arteries. This plaque formation narrows the arteries and can restrict blood flow, increasing the risk of cardiovascular events such as heart attacks and strokes.

In contrast, high-density lipoprotein (HDL) cholesterol is considered "good" cholesterol, as it helps remove LDL cholesterol from the bloodstream and transport it to the liver for excretion or recycling. Therefore, low HDL levels, combined with high LDL levels, can heighten the risk of heart disease, reinforcing the importance of maintaining a healthy balance of these lipid profiles.

Physicians often focus on managing LDL cholesterol levels to help prevent the onset of heart disease, making the information about the harmful effects of high LDL levels crucial for understanding cardiovascular health.