Your cholesterol levels are a key measure of heart health. Normal total cholesterol is below 200 milligrams per deciliter (mg/dL). But the numbers for LDL, HDL, and triglycerides also matter. Here is what the evidence shows.
What Are the Different Types of Cholesterol?
Cholesterol is not all the same. It travels through your blood in three main forms.
LDL cholesterol (low-density lipoprotein) is often called “bad” cholesterol. It can build up in artery walls and form plaque. Higher LDL levels raise your risk of heart attack and stroke.
HDL cholesterol (high-density lipoprotein) is “good” cholesterol. It helps remove excess cholesterol from your blood. Higher HDL levels are linked to better heart health.
Triglycerides are a type of fat in your blood. They store extra energy from food. High triglycerides combined with high LDL or low HDL increase heart disease risk.
Total cholesterol is simply your LDL plus HDL plus 20% of your triglyceride level.
What Are Normal Cholesterol Ranges?
Doctors use standard ranges based on population studies and clinical guidelines. These numbers apply to adults without known heart disease.
| Cholesterol Type | Desirable Level (mg/dL) |
|---|---|
| Total cholesterol | Less than 200 |
| LDL cholesterol | Less than 100 (optimal) |
| HDL cholesterol | 60 or higher (protective) |
| Triglycerides | Less than 150 |
Borderline high ranges also exist. Total cholesterol between 200 and 239 is borderline high. 240 and above is high. LDL between 100 and 129 is near optimal to above optimal. 130 to 159 is borderline high. 160 and above is high.
These are general guidelines. Your doctor may set different targets based on your personal risk factors, such as diabetes, high blood pressure, smoking, or a family history of early heart disease. For people with known heart disease or diabetes, the recommended LDL target is often below 70 mg/dL.
What Do Your Cholesterol Numbers Mean for Your Health?
A single number does not tell the whole story. The ratio of LDL to HDL and your overall risk profile matter more.
For example, a total cholesterol of 210 might be acceptable if your HDL is high and your LDL is only slightly elevated. But the same total number with low HDL and high triglycerides would raise concern.
Non-HDL cholesterol (total minus HDL) is another strong predictor. It accounts for all the “bad” particles. A non-HDL level below 130 is desirable.
Most people do not feel high cholesterol. It has no symptoms until it causes a heart attack or stroke. That is why routine screening is important. The American Heart Association recommends adults age 20 and older get a lipid panel every 4 to 6 years if risk is low. More frequent testing may be needed for those with elevated risk.
How Is Cholesterol Measured?
A blood test called a lipid panel gives your numbers. You may need to fast for 9 to 12 hours before the test, especially if triglycerides are included. Some labs now allow non-fasting tests for total, LDL, and HDL, but triglycerides require fasting for accurate results.
The test measures milligrams of cholesterol per deciliter of blood. Your doctor interprets the results in the context of your overall health.
What Factors Affect Your Cholesterol Levels?
Some factors you cannot control. Genetics play a large role. Familial hypercholesterolemia is a genetic condition that causes very high LDL from birth. Age also raises cholesterol naturally.
Other factors you can influence. Diet is one. Saturated fats found in red meat, butter, and full-fat dairy raise LDL. Trans fats found in some processed foods are even worse. Soluble fiber from oats, beans, and apples can help lower LDL.
Physical activity boosts HDL and lowers triglycerides. Smoking lowers HDL and damages blood vessels. Excess weight, especially around the abdomen, tends to increase LDL and triglycerides and lower HDL.
Medical conditions such as diabetes, hypothyroidism, and kidney disease can affect cholesterol levels. So can medications like some diuretics and steroids.
How Can You Improve Your Cholesterol Levels?
Lifestyle changes are the first step for most people. The evidence supports these approaches:
When lifestyle alone is not enough, medications can lower cholesterol. Statins are the most studied and widely used class. They reduce LDL production in the liver and lower heart attack risk. Other drugs include ezetimibe, bile acid sequestrants, and PCSK9 inhibitors. The decision to start medication depends on your LDL level and your overall cardiovascular risk.
What Are Normal Cholesterol Levels for Children?
Children also need healthy cholesterol levels. The same lipid panel is used, but the target numbers differ slightly by age.
For children and teens (ages 2 to 19), desirable total cholesterol is below 170 mg/dL. LDL should be below 110 mg/dL. HDL should be above 45 mg/dL. Triglycerides vary by age and sex. For example, in children ages 10 to 19, triglycerides below 90 mg/dL (boys) or below 110 mg/dL (girls) are considered normal.
Screening is recommended for children with a parent who has high cholesterol, a family history of early heart disease, or other risk factors like obesity or diabetes. Routine screening for all children is not universally recommended, but many pediatricians now check once between ages 9 and 11.
When Should You Get Tested?
The first test should come in your 20s. If your levels are normal and you have no major risk factors, repeat every 4 to 6 years. More frequent testing is needed if you have:
Men tend to have higher cholesterol than premenopausal women. After menopause, women’s cholesterol often rises. So regular monitoring during and after menopause is important.
Common Misconceptions About Cholesterol
One myth is that all cholesterol is bad. In reality, your body needs cholesterol to build cells and make hormones. The goal is not to eliminate it, but to keep the right balance.
Another myth is that dietary cholesterol from eggs raises blood cholesterol significantly. Research has shown that for most people, saturated fat in the diet has a much bigger impact than the cholesterol in food. The 2015 Dietary Guidelines for Americans removed the previous limit of 300 mg of dietary cholesterol per day. Eggs can be part of a heart-healthy diet if eaten in moderation and not combined with bacon or butter.
A third myth is that thin people cannot have high cholesterol. Genetics can cause high LDL even in people at a healthy weight. Everyone should get tested regardless of body size.
Frequently Asked Questions
What is a normal total cholesterol level?
Normal total cholesterol is less than 200 mg/dL. Levels between 200 and 239 are borderline high; 240 and above is high.
What is a normal LDL cholesterol level?
Optimal LDL is less than 100 mg/dL. Near optimal is 100 to 129. Levels above 160 are high. For people with heart disease or diabetes, the target is often less than 70.
How often should I get my cholesterol checked?
Adults should get a lipid panel every 4 to 6 years starting at age 20. More frequent testing is recommended if you have risk factors or elevated levels.
Can diet alone lower high cholesterol?
For many people, a heart-healthy diet can lower LDL by 5% to 15%. But if your levels are very high or you have genetic factors, medication may still be needed.
