A cholesterol check is a simple blood test that measures the levels of cholesterol in your body. Cholesterol is a fatty substance that can build up in your arteries, potentially leading to heart disease and other health issues. The test typically measures three types of cholesterol: LDL (often referred to as "bad" cholesterol), HDL (known as "good" cholesterol), and total cholesterol levels. Doctors recommend cholesterol checks for adults, especially those with risk factors like obesity, smoking, or a family history of heart disease. The results help healthcare providers assess your heart health and determine if lifestyle changes or medications are needed to manage cholesterol levels effectively.