Low-density lipoprotein (LDL) is a type of cholesterol found in the blood. It is often referred to as "bad" cholesterol because high levels of LDL can lead to the buildup of plaque in the arteries, increasing the risk of heart disease and stroke. LDL carries cholesterol from the liver to the cells, but when there is too much, it can accumulate in the artery walls. Managing LDL levels is important for overall health. Regular exercise, a balanced diet low in saturated fats, and medications like statins can help lower LDL cholesterol. Monitoring LDL levels through blood tests is a common practice in preventive healthcare to assess cardiovascular risk.