Low-Density Lipoproteins, or LDL, are a type of cholesterol found in the blood. They are 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 cause health problems. Monitoring LDL levels is important for maintaining cardiovascular health. A healthy lifestyle, including a balanced diet and regular exercise, can help manage LDL levels. Healthcare providers often recommend tests to check cholesterol levels and assess overall heart health.