Blood cholesterol is measured in units called millimoles per litre of blood, or mmol/L. As a rough guide, the total levels should be: 5 mmol/L or less for healthy adults. 4 mmol/L or less for those at high risk. LDL levels should be: 3 mmol/L or less for healthy adults. 2 mmol/L or less for those at high risk.
Summary Cholesterol levels vary by age, weight, and sex. They typically increase over time, and people over 20 should check their cholesterol levels every 5 years. The Centers for Disease Cholesterol: Top foods to improve your numbers. Diet can play an important role in lowering your cholesterol. Here are some foods to improve your cholesterol and protect your heart. By Mayo Clinic Staff High Cholesterol HDL and LDL Cholesterol Range by Age For adults, 125-200 mg/dL total cholesterol is a normal range By Barbie Cervoni, RD Updated on July 09, 2023 Medically reviewed by Richard N. Fogoros, MD Table of Contents Types of Cholesterol Levels by Age Getting Tested Risk Factors Lowering Cholesterol High cholesterol is when you have too much of a fatty substance called cholesterol in your blood. It's mainly caused by eating fatty food, not exercising enough, being overweight, smoking and drinking alcohol. It can also run in families. You can lower your cholesterol by eating healthily and getting more exercise. Total cholesterol represents the combined amount of "bad" cholesterol (low-density, or LDL) and "good" cholesterol (high-density lipoprotein, or HDL) in your blood. The measurement is then compared to your individual HDL result to gauge your risk for heart disease and stroke.

A blood test to check cholesterol levels — called a lipid panel or lipid profile — typically reports: Total cholesterol. LDL cholesterol. HDL cholesterol. Triglycerides — a type of fat in the blood. Generally you're required to fast, consuming no food or liquids other than water, for nine to 12 hours before the test.

Guide to healthy levels for different types of cholesterol; Result Healthy level; Total cholesterol: Below 5mmol/L: HDL (good cholesterol) Above 1.0mmol/L for men or above 1.2mmol/L for women: Non-HDL (bad cholesterol) Below 4mmol/L
Too much cholesterol in the body can clog arteries. Total cholesterol is the sum of all the cholesterol in your blood. Your risk for heart attack and stroke increases with higher cholesterol levels. Other risk factors include smoking, high blood pressure, diabetes, and family history of heart disease or stroke.
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Key facts Cholesterol is produced by your body and also found in some foods. While some cholesterol is used in normal body processes, too much cholesterol can damage your arteries and increase your risk of heart disease. Important measures of cholesterol include HDL ("good cholesterol") and LDL ("bad cholesterol").
Cholesterol is a fatty substance your liver makes that can be bad or good for your heart health. Learn the recommended cholesterol levels by age, sex, and risk factors, as well as the treatment options and lifestyle changes to lower your cholesterol. Find out the difference between LDL, HDL, triglycerides, and more.
Cholesterol circulates in the blood. As the amount of cholesterol in your blood increases, so does the risk to your health. High cholesterol contributes to a higher risk of cardiovascular diseases, such as heart disease and stroke. That's why it's important to have your cholesterol tested, so you can know your levels.
Diagnosis. High cholesterol is a condition that occurs when levels of cholesterol in your blood are elevated enough to cause health problems, including heart disease and stroke. Sometimes known as High Cholesterol Facts Print Find up-to-date facts about high cholesterol in the United States. High total cholesterol in the United States Between 2017 and 2020, 10% of adults age 20 or older had total cholesterol levels above 240 mg/dL and about 17% had high-density lipoprotein (HDL, or "good") cholesterol levels below 40 mg/dL. 1 .