Cholesterol Levels Chart by Age: What's Normal for LDL, HDL and Total Cholesterol

The short answer: for every adult aged 20 and over, a healthy cholesterol panel is a total cholesterol below 200 mg/dL, LDL (“bad”) cholesterol below 100 mg/dL, HDL (“good”) cholesterol of at least 40 mg/dL in men and 50 mg/dL in women, and triglycerides below 150 mg/dL. Unlike blood pressure, cholesterol cut-offs do not change with each decade of adult life — the same targets apply at 25, 50 and 75. What does change with age is how often you should be tested, what your average result tends to look like, and how aggressively a doctor will treat a high number. This guide gives you the full chart by age, the separate chart for children and teens, and a plain-language walkthrough of how to read your own lab report.

High cholesterol has no symptoms, so the only way to know your numbers is a blood test (a lipid panel). According to the Centers for Disease Control and Prevention (CDC) , about 86 million adults in the United States aged 20 and older have a total cholesterol of 200 mg/dL or higher, and roughly 25 million are at 240 mg/dL or higher — yet many have never been told. The charts below follow the reference values published by the National Heart, Lung, and Blood Institute (NHLBI) and MedlinePlus.

The cholesterol levels chart by age

Here is the honest version of the “by age” chart. Medical guidelines publish one set of desirable cut-offs for all adults, not different “normal” ranges for your 30s, 40s and 50s. The right-hand column shows what genuinely changes at each stage of life.

Reading results in mmol/L? Most countries outside the US report cholesterol in mmol/L. To convert, divide any cholesterol value (total, LDL, HDL) in mg/dL by 38.67, and triglycerides by 88.57. For example, a total cholesterol of 200 mg/dL is about 5.2 mmol/L, an LDL of 100 mg/dL is about 2.6 mmol/L, and triglycerides of 150 mg/dL are about 1.7 mmol/L.

Adult ranges in detail: desirable, borderline high and high

The chart above shows the “desirable” line. The NHLBI  categories below show where borderline ends and high begins for adults — this is the table to use when your result is above the healthy line.

Two notes on LDL: a result of 100–129 mg/dL is classed “near optimal” — fine for a low-risk person, but above goal if your risk is high. And HDL is the one number where higher is better; doctors do not treat low HDL with a drug directly, but it counts as a risk factor and usually improves with exercise, weight loss and quitting smoking.

Cholesterol chart for children and teens (ages 2–19)

Children are not small adults: their acceptable ranges are lower, and the NHLBI values reproduced by MedlinePlus  are the standard reference. Every child should be screened once between ages 9 and 11 and again between 17 and 21 — earlier, from age 2, if there is a family history of high cholesterol or early heart disease.

A single borderline result in a child is usually rechecked rather than treated — levels naturally dip during puberty and rise again towards the end of the teens. Persistently high LDL in a child, especially with a parent who had early heart disease, should prompt a conversation about inherited high cholesterol (familial hypercholesterolemia).

What each number on the panel actually means

Total cholesterol is the sum of the main cholesterol-carrying particles in your blood — roughly LDL + HDL + a fraction of triglyceride-rich particles. It is a useful headline number, but on its own it can mislead: a total of 210 mg/dL driven by a very high HDL is a very different picture from 210 mg/dL driven by LDL.

LDL cholesterol is the “bad” cholesterol. LDL particles deliver cholesterol into artery walls, where it builds up as plaque. This is the number most strongly linked to heart attacks and strokes, and the main target of treatment — the American Heart Association notes that the lower your LDL, the lower your risk.

HDL cholesterol is the “good” cholesterol. HDL particles carry cholesterol away from arteries back to the liver. Higher HDL (60 mg/dL and above) is protective; low HDL is a risk factor, though raising it with medication has not been shown to prevent events — it is a marker to improve through lifestyle.

Non-HDL cholesterol is simply your total cholesterol minus your HDL. It captures all the artery-clogging particles in one number (LDL plus triglyceride-rich remnants), which is why many specialists consider it at least as useful as LDL — especially if your triglycerides are high. The goal is below 130 mg/dL.

Triglycerides are not cholesterol but a type of blood fat used for energy. High triglycerides travel with low HDL and diabetes risk, and at very high levels (500 mg/dL and above) they can trigger inflammation of the pancreas (pancreatitis), which is a medical emergency.

How to read your own lab result: a worked example

Reading a lipid panel works the same way as reading any reference chart — our urine alcohol level chart guide uses the same find-your-number, check-the-band approach. Take this real-world style example: a 52-year-old woman whose results come back as total cholesterol 232, LDL 148, HDL 52, triglycerides 160.

Three practical checks when you read any result. First, check whether you fasted: some cholesterol tests require fasting for 9–12 hours beforehand, and a non-fasting sample mainly distorts triglycerides (and therefore a calculated LDL). Second, know whether your LDL was calculated or measured directly — most labs calculate it from the other values, and the calculation becomes unreliable when triglycerides are very high. Third, never judge yourself on one panel: cholesterol varies with illness, stress, recent diet and even the season, so doctors usually repeat an unexpected result before making decisions.

Why cholesterol tends to rise with age

If the targets never change, why do so many people watch their numbers creep up decade by decade? Several things happen at once. The liver gradually becomes less efficient at clearing LDL from the blood. Body weight and waist size tend to increase while activity drops, which pushes triglycerides up and HDL down. For women, menopause is a turning point: before it, women typically run lower LDL than men of the same age; after it, LDL and total cholesterol rise, and by the mid-50s women’s average levels are often higher than men’s.

Age is not the only hidden driver. An underactive thyroid, kidney disease and diabetes can all push cholesterol up — the diabetes pattern is typically high triglycerides with low HDL. When both LDL cholesterol and triglycerides are elevated together, doctors call it mixed hyperlipidemia; our guide to the mixed hyperlipidemia ICD-10 code E78.2 explains how that diagnosis is coded and worked up. Certain medicines, including some steroids and older blood-pressure drugs, can also nudge numbers upward. And some people inherit the tendency: genes, not diet, are the main driver when LDL is very high from a young age.

What moves each number

Different habits move different lines of the panel. This table summarises which lever does what, based on the lifestyle guidance from MedlinePlus and the NHLBI.

What you cannot change matters too: age, sex, family history and ethnicity all influence your baseline. That is why two people eating the same diet can have very different panels — and why a high result is information, not a personal failure.

When is medication considered?

For most people with mildly raised numbers and low overall risk, doctors start with lifestyle changes and recheck in a few months. Medication — usually a statin first — enters the conversation in specific situations:

• LDL of 190 mg/dL or higher at any age. Medication is generally recommended regardless of other risk factors, and a level this high should trigger screening for familial hypercholesterolemia (see below).
• Adults aged 30 and over with LDL of 160 mg/dL or higher, especially with a strong family history of early heart disease.
• Diabetes between ages 40 and 75. A statin discussion is standard even when LDL is only moderately raised, because diabetes multiplies the risk that cholesterol causes.
• Established heart or artery disease — a previous heart attack, stroke, stent or bypass — where the goal is to drive LDL much lower (see the goals table).
• A high calculated 10-year risk of heart attack or stroke that stays high after lifestyle changes.
• Triglycerides of 500 mg/dL or higher, where treatment (plus cutting alcohol and fat) is aimed at preventing pancreatitis as much as heart disease.

Once treatment is on the table, the goal for LDL depends on your risk category. MedlinePlus summarises the current risk-based targets like this:

The inherited form: familial hypercholesterolemia and Lp(a)

About 1 in 250 people has familial hypercholesterolemia (FH), a genetic condition that keeps LDL very high from birth. Red flags are an LDL of 190 mg/dL or more (160 or more in a child), a parent or sibling who had a heart attack or stroke unusually young — before 55 in men, before 60 in women — and visible cholesterol deposits such as tendon xanthomas or a grey-white ring around the cornea at a young age. FH is treated earlier and more aggressively than ordinary high cholesterol, and close relatives should be screened too. Separately, MedlinePlus notes that adults should have their Lp(a) — another inherited risk particle that lifestyle barely changes — measured once in their lifetime, particularly when there is a family history of early heart disease.

How often should you get tested?

The CDC’s testing guidance  is the simple version: most healthy adults should have their cholesterol checked every 4 to 6 years. The more detailed MedlinePlus/NHLBI schedule runs like this:

• Children and teens: once between ages 9 and 11, and again between 17 and 21 (from age 2 if there is a family history of high cholesterol or early heart disease).
• Adults up to 65: about every 5 years for younger adults; every 1 to 2 years for men aged 45–65 and women aged 55–65.
• Over 65: every year.
• More often at any age if you have heart disease, diabetes, a family history of high cholesterol, or you are being treated for high cholesterol.

A cholesterol panel is a standard part of a routine check-up — if you are booking one, our annual physical exam checklist by age shows which other tests are usually due at the same visit, so you can get everything drawn in one trip.

The bottom line

The cholesterol chart by age is simpler than it looks: one set of healthy targets for every adult (total below 200, LDL below 100, HDL at least 40/50, triglycerides below 150 mg/dL), a genuinely lower set for children and teens, and risk-based LDL goals of 100, 70 or 55 mg/dL once treatment enters the picture. Age changes how often you test and how a doctor reacts to a high result — not the definition of “normal”. If your numbers are above the line, the next step is a conversation about your overall risk, not panic over a single value.

This article is for general information only and is not medical advice. Cholesterol results should always be interpreted by a clinician who knows your full health history. If you have chest pain, breathlessness or other symptoms of a heart attack or stroke, seek emergency care immediately.