Cholesterol is a waxy substance found in your blood. While your body needs cholesterol to build healthy cells, having high levels can increase your risk of heart disease.
The Different Types
LDL (Low-Density Lipoprotein): Often called 'bad' cholesterol, it builds up in your artery walls. HDL (High-Density Lipoprotein): Known as 'good' cholesterol, it carries cholesterol away from your arteries.