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A Guide to Cholesterol

by Taylor Lofton


Cholesterol is a waxy, fat‑like substance (a lipid) that your body needs to function. It helps build cells, produce hormones, and support normal digestion. Additionally, every cell in your body contains some cholesterol, but the cholesterol most people think about is the kind found in the bloodstream. When your healthcare provider orders a lipid panel, they are measuring how much cholesterol is in your blood and how it is being carried. These results help determine your risk for heart disease and guide decisions about specific treatment.

When Do You Need to Worry About Your Cholesterol?

Cholesterol becomes harmful when levels rise too high. Excess cholesterol can build up in the walls of your arteries, weaken them, and form hardened deposits known as atherosclerotic plaque. Over time, this buildup narrows the vessels that carry blood to the heart, brain, and other organs, which raises the risk for heart attacks and strokes. Since high cholesterol has no symptoms, routine blood testing is the only way to know your levels and understand your risk.

Understanding Cholesterol Numbers
These are the numbers measured on a lipid panel. Each one tells you something different about your overall health.

Total Cholesterol
Goal:
Below 200 mg/dL
This represents the total amount of cholesterol in your blood, including LDL, HDL, and VLDL.

LDL (Low-Density Lipoprotein)
Goal:
Below 100 mg/dL
Often called “bad” cholesterol. High LDL contributes to plaque buildup in your arteries.

HDL (High-Density Lipoprotein)
Goal:
60–80 mg/dL
Known as “good” cholesterol. HDL helps to remove extra cholesterol from your bloodstream. Women generally need slightly higher HDL than men; 40-80 (males), 50-80 (females)

VLDL (Very-Low-Density Lipoprotein)
Goal:
Below 30 mg/dL
Another “bad” cholesterol. VLDL carries triglycerides and contributes to plaque formation.

Triglycerides
Goal: Below 150 mg/dL for adults. Below 90 mg/dL for people between the ages of 10 and 19.
A type of fat measured with your cholesterol test. High triglycerides often appear alongside high VLDL and can increase heart disease risk.

Why These Numbers Matter
When LDL and VLDL are too high, they can build up inside the artery walls and harden into plaque. This can lead to:

  • Coronary artery disease (reduced blood flow to the heart)
  • Carotid artery disease (reduced blood flow to the brain)
  • Peripheral artery disease (reduced blood flow to the legs and arms)

High cholesterol has no symptoms, meaning you can have it for years without knowing it. Regular testing is the only way to know your numbers. High cholesterol is a major risk factor for heart attack and stroke, but it can be improved with lifestyle changes and, when needed, medication. Here are the recommended testing frequencies and lifestyle changes, alongside what is considered high cholesterol: 

How Often Should You Have Your Cholesterol Checked?
How often you need to have your cholesterol checked depends on your age and sex.

Men

  • Ages 20–44: Every 5 years
  • Ages 45–65: Every 1–2 years
  • Ages 65+: Every year

Women

  • Ages 20–54: Every 5 years
  • Ages 55–65: Every 1–2 years
  • Ages 65+: Every year

What’s Considered High (in mg/dL)?

Total Cholesterol

  • Borderline high: 200–239
  • High: 240+

LDL

  • Elevated: 100–129
  • Borderline high: 130–159
  • High: 160–189
  • Very high: 190+

VLDL

  • High: 30+

HDL

  • Too low if below 40 (men) or 50 (women)

How to Improve Your Numbers
Cholesterol levels are not fixed! If your numbers are high, you can begin improving them with small, consistent changes.

Helpful steps include:

  • Eating more fruits, vegetables, whole grains, beans, and fish
  • Reducing fried foods, fatty meats, and foods high in saturated fat
  • Choosing healthier fats like olive oil instead of butter
  • Increasing physical activity, such as walking 20–30 minutes a day
  • Working toward a healthier weight, as even a small loss can help
  • Talking with your healthcare provider about whether medication is appropriate

Improving your cholesterol is a gradual process, but steady changes can lower LDL, raise HDL, and reduce your overall risk for heart disease. Knowing your numbers is the first step, and taking action to move them in a healthier direction is the next.

Sources:
Cholesterol Levels | Cleveland Clinic

Cholesterol Tools and Resources | American Heart Association

Health Recipes | American Heart Association

Life’s Essential 8™ – How to Control Cholesterol Fact Sheet | American Heart Association

Triglycerides | Cleveland Clinic

What Is Cholesterol? | Cleveland Clinic

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