For most adults age 20 and older, healthy cholesterol means a total cholesterol below 200 mg/dL, LDL (“bad”) cholesterol below 100 mg/dL, HDL (“good”) cholesterol at or above 60 mg/dL, and triglycerides below 150 mg/dL. These are the numbers your doctor compares against when reviewing a standard lipid panel. But the targets that matter most for you depend on your age, sex, and whether you have conditions like diabetes or heart disease.
The Four Numbers on Your Lipid Panel
A standard cholesterol test measures four things, and each one tells a different part of the story.
Total cholesterol is the simplest snapshot. Below 200 mg/dL is considered healthy for adults. It’s useful as a quick screen, but it doesn’t distinguish between the helpful and harmful types of cholesterol, so doctors rarely make treatment decisions based on this number alone.
LDL cholesterol is the one most linked to heart disease. LDL particles deposit cholesterol into artery walls, gradually narrowing them. Below 100 mg/dL is the standard healthy target. If your LDL is consistently above that, your overall cardiovascular risk starts climbing.
HDL cholesterol works in the opposite direction. It helps pull cholesterol out of your arteries and back to the liver for removal. Higher is better here: 60 mg/dL or above offers meaningful protection against heart disease. The floor for concern differs by sex. For men, HDL below 40 mg/dL is considered low. For women, the cutoff is 50 mg/dL. That gap exists because estrogen tends to raise HDL, so premenopausal women naturally run higher levels.
Triglycerides are fats your body uses for energy. Below 150 mg/dL is healthy. Between 150 and 199 is borderline high. Between 200 and 499 is high, and above 500 is very high, a level that raises the risk of pancreas inflammation on top of heart disease.
Non-HDL Cholesterol: A Number Worth Checking
Many lipid panels now include non-HDL cholesterol, which captures all the cholesterol types that can damage your arteries, not just LDL. You can calculate it yourself: subtract your HDL from your total cholesterol. If your total is 180 and your HDL is 60, your non-HDL is 120.
For most adults, non-HDL should stay below 130 mg/dL. This number is especially useful if your triglycerides are elevated, because high triglycerides can make LDL measurements less accurate. In those cases, non-HDL gives your doctor a more reliable picture of your actual risk.
How Targets Change With Risk
The numbers above apply to generally healthy adults. If you already have heart disease, diabetes, or multiple risk factors, the goalposts shift significantly. Current guidelines from the American College of Cardiology and American Heart Association lay out a tiered system:
- Borderline or intermediate risk: LDL below 100 mg/dL
- High risk (diabetes, strong family history, or multiple risk factors): LDL below 70 mg/dL
- Very high risk (existing heart disease with additional risk factors): LDL below 55 mg/dL
That very high risk category, with its target of below 55 mg/dL, reflects 2025 ACC/AHA guidelines that have gotten progressively more aggressive. The thinking is straightforward: in people who have already had a heart attack or have conditions like diabetes combined with artery disease in multiple areas, pushing LDL as low as possible provides the most protection against a future event.
Healthy Levels for Children and Teens
Children and teens age 19 and younger have their own set of targets, which are lower across the board:
- Total cholesterol: below 170 mg/dL
- LDL: below 110 mg/dL
- HDL: above 45 mg/dL
- Non-HDL: below 120 mg/dL
- Triglycerides: below 90 mg/dL (ages 10 to 19)
Medication is rarely part of the conversation for young people. It’s typically only considered for children 10 and older whose LDL exceeds 190 mg/dL after six months of diet and exercise changes, or whose LDL tops 160 with additional risk factors like a family history of early heart disease.
Do You Need to Fast Before the Test?
For years, doctors required a 9- to 12-hour fast before a cholesterol test. That’s no longer the standard in many cases. Multiple medical societies around the world, including groups in the U.S., Europe, Canada, and the U.K., now endorse non-fasting lipid panels for most people.
The reason is practical: eating a normal meal only raises triglycerides by about 26 mg/dL on average and shifts LDL and total cholesterol by roughly 8 mg/dL. Those small fluctuations don’t change clinical decisions. A doctor deciding whether your triglycerides are concerning cares about the difference between 176 and 440, not between 176 and 202. HDL is largely unaffected by food.
Fasting still makes sense in specific situations, particularly if your triglycerides have been borderline or high in the past and your doctor wants the most precise measurement. But if your clinic draws blood without requiring a fast, the results are still reliable.
How Often to Get Tested
Most healthy adults should have their cholesterol checked every four to six years. If you have heart disease, diabetes, or a family history of high cholesterol, more frequent testing is appropriate, often annually or even every few months while adjusting treatment.
Screening typically starts at age 20 for adults. For children with risk factors like a family history of very high cholesterol or early heart disease, pediatricians may order a lipid panel as early as age 2, though routine screening for all children usually happens between ages 9 and 11.
What Actually Moves the Numbers
Your cholesterol levels are shaped by a combination of genetics, diet, activity level, and body composition. Some people eat well and exercise regularly but still have high LDL because of how their liver processes cholesterol. Others can make significant improvements through lifestyle changes alone.
Replacing saturated fat (found in red meat, full-fat dairy, and fried foods) with unsaturated fat (olive oil, nuts, fatty fish) consistently lowers LDL. Soluble fiber, the kind found in oats, beans, and fruits, binds to cholesterol in the gut and helps remove it. Regular aerobic exercise raises HDL, sometimes by 5 to 10 percent. Losing excess weight improves nearly every number on the panel, lowering LDL and triglycerides while raising HDL.
Triglycerides respond especially strongly to sugar, refined carbohydrates, and alcohol. Cutting back on sugary drinks and highly processed grains often brings borderline triglycerides back into the healthy range within weeks. For people whose numbers don’t respond enough to these changes, or who start with very high levels, medication becomes part of the plan, with the specific LDL target depending on which risk category you fall into.