A normal cholesterol level by age varies according to the guidelines set by the American Heart Association and the National Cholesterol Education Program. Generally, the optimal cholesterol levels for adults over the age of 20 are:
Total cholesterol: Less than 200 mg/dL
LDL (low-density lipoprotein): Less than 100 mg/dL
HDL (high-density lipoprotein): Greater than 40 mg/dL
Triglycerides: Less than 150 mg/dL
These levels are the same for adults of all ages, including those over 50. However, for children and adolescents under the age of 20, the optimal cholesterol levels are slightly different. For children and adolescents, the optimal cholesterol levels are:
Total cholesterol: Less than 170 mg/dL
LDL: Less than 110 mg/dL
HDL: Greater than 45 mg/dL
Triglycerides: Less than 90 mg/dL
It is important to note that these levels are only guidelines, and that individual factors such as lifestyle, diet, and medical history can affect a person’s cholesterol levels. For this reason, it is recommended that everyone get their cholesterol levels checked regularly. If your cholesterol levels are outside of the normal range, your doctor may recommend lifestyle changes, such as a healthier diet and increased physical activity, or they may prescribe medication to help you achieve your optimal cholesterol levels.