What Should Cholesterol Levels Be by Age?

Optimal total cholesterol for adults is around 150 mg/dL, with LDL (“bad”) cholesterol near 100 mg/dL and HDL (“good”) cholesterol at least 40 mg/dL for men or 50 mg/dL for women. A total cholesterol above 200 mg/dL is generally considered high. But these numbers tell only part of the story, because each component of your lipid panel carries its own target, and your personal risk factors can shift those targets significantly.

What a Lipid Panel Measures

When you get your cholesterol checked, the results come back as a lipid panel with four main numbers: total cholesterol, LDL cholesterol, HDL cholesterol, and triglycerides. Some panels also include non-HDL cholesterol, which is simply your total cholesterol minus your HDL. Each of these numbers reflects something different about how your body handles fats in the bloodstream, and each has its own healthy range.

Ideal Levels for Adults

Here are the targets for adults age 20 and older:

  • Total cholesterol: Around 150 mg/dL is optimal. Above 200 mg/dL is considered high.
  • LDL cholesterol: Below 100 mg/dL is optimal. Between 100 and 159 mg/dL is elevated, and 160 mg/dL or higher is considered dangerous.
  • HDL cholesterol: At least 40 mg/dL for men and 50 mg/dL for women. Higher is better, since HDL helps remove excess cholesterol from your blood.
  • Triglycerides: Below 150 mg/dL is healthy. Between 150 and 199 mg/dL is borderline high, 200 to 499 mg/dL is high, and above 500 mg/dL is very high.
  • Non-HDL cholesterol: Below 130 mg/dL for both men and women.

Of all these numbers, LDL tends to get the most attention because it’s the type most directly linked to plaque buildup in your arteries. But no single number tells the whole story. Someone with an LDL of 95 but very low HDL and high triglycerides can still be at meaningful cardiovascular risk.

Why HDL Targets Differ by Sex

Women naturally tend to have higher HDL levels than men, which is why the minimum threshold is set 10 points higher (50 mg/dL versus 40 mg/dL). The National Lipid Association specifically recommends a higher HDL goal for women based on evidence that the protective benefits of HDL vary between sexes. If you’re a woman with HDL in the low 40s, that number looks normal on some generic charts but is actually below your recommended floor.

Targets for Children and Teens

Cholesterol screening isn’t just for adults. The CDC recommends that children have their cholesterol checked at least once between ages 9 and 11, and again between ages 17 and 21. The healthy ranges for anyone 19 or younger are tighter than adult targets:

  • Total cholesterol: Less than 170 mg/dL
  • LDL cholesterol: Less than 110 mg/dL
  • HDL cholesterol: More than 45 mg/dL
  • Non-HDL cholesterol: Less than 120 mg/dL
  • Triglycerides: Less than 90 mg/dL (ages 10 to 19)

These lower cutoffs reflect the fact that arterial damage from cholesterol begins in childhood. Catching elevated levels early gives families years to make dietary and lifestyle changes before the damage compounds.

Stricter Goals for High-Risk Adults

The standard LDL target of under 100 mg/dL applies to the general population. If you already have cardiovascular disease, those targets drop considerably. People with known heart disease should aim for LDL below 70 mg/dL. For those at the very highest risk, such as people who’ve had a heart attack or stroke, European guidelines recommend pushing LDL below 55 mg/dL.

These aggressive targets come from clinical trials showing that lower LDL translates directly into fewer cardiovascular events in people who already have damaged arteries. Your doctor will assess your overall risk profile, including factors like diabetes, high blood pressure, smoking history, and family history, to determine which LDL goal makes sense for you. People with diabetes or a family history of high cholesterol typically fall into a higher-risk category even if they haven’t had a cardiac event yet.

How Often to Get Tested

Most healthy adults should have their cholesterol checked every 4 to 6 years. That interval shortens if you have heart disease, diabetes, or a family history of high cholesterol. A first screening in your 20s establishes a baseline, and regular follow-ups track whether your numbers are trending in the wrong direction before they reach dangerous territory.

You don’t always need to fast before a cholesterol test. Non-fasting lipid panels give accurate readings for total cholesterol and HDL. However, if your triglycerides came back high on a non-fasting test, your doctor may ask you to repeat the test after a 9- to 12-hour fast for a more precise triglyceride and LDL reading.

What Moves Your Numbers

Cholesterol levels respond to a mix of genetics and daily habits. Some people inherit a tendency toward high LDL that no amount of dietary change will fully correct, while others can shift their numbers substantially through lifestyle alone.

The factors with the most impact on LDL include saturated fat intake, body weight, and physical activity. Replacing saturated fats (found in red meat, full-fat dairy, and many processed foods) with unsaturated fats (olive oil, nuts, fatty fish) reliably lowers LDL. Regular aerobic exercise raises HDL, sometimes by 5 to 10 percent. Losing even a modest amount of weight, around 5 to 10 percent of your body weight, can improve all four lipid panel numbers simultaneously.

Triglycerides are particularly sensitive to sugar, refined carbohydrates, and alcohol. If your triglycerides are the main problem on your panel, cutting back on sweetened drinks, white bread, and alcohol often produces noticeable improvement within a few months. In contrast, HDL is stubbornly resistant to dietary intervention. Exercise and weight loss are the most effective non-medication strategies for raising it.