What your cholesterol numbers actually mean — in plain language, without the confusion.
Cholesterol is a waxy, fat-like substance found in every cell of your body. Your body actually needs cholesterol to build cell membranes, produce hormones like estrogen and testosterone, and help digest food. The problem arises when there's too much of the wrong type in your blood.
Cholesterol travels through your bloodstream attached to proteins called lipoproteins — which is why the cholesterol test is also called a "lipid panel" or "lipid profile."
A standard lipid panel measures four things:
💡 You'll usually need to fast for 9–12 hours before a lipid panel for accurate triglyceride results. LDL, HDL, and total cholesterol can often be measured without fasting.
LDL (Low-Density Lipoprotein) is often called "bad" cholesterol because high levels can build up as plaque inside the walls of your arteries, narrowing them over time and increasing the risk of heart disease.
Ideal for most adults. Below 70 mg/dL is recommended for people with existing heart disease.
Good for people with no heart disease risk factors.
Warrants attention, especially if combined with other risk factors.
Significantly increased risk. Lifestyle changes and/or medication often recommended.
HDL (High-Density Lipoprotein) is called "good" cholesterol because it acts like a clean-up crew — it picks up excess LDL cholesterol from your artery walls and carries it back to your liver to be processed and removed.
Higher HDL is better. Unlike most blood markers where you want to be in a middle range, with HDL, more is generally better.
| HDL Level | What it means |
|---|---|
| Below 40 mg/dL (men) / 50 mg/dL (women) | Low — increased heart disease risk |
| 40–59 mg/dL | Acceptable — room for improvement |
| 60 mg/dL and above | Optimal — protective against heart disease |
Total cholesterol is the sum of all cholesterol types in your blood. While it gives a quick overview, it's less useful on its own than the individual LDL and HDL values.
| Total Cholesterol | Classification |
|---|---|
| Below 200 mg/dL | ✅ Desirable |
| 200–239 mg/dL | ⚠️ Borderline high |
| 240 mg/dL and above | 🔴 High |
💡 The ratio matters. A total cholesterol of 220 mg/dL with an HDL of 70 mg/dL is very different from the same total cholesterol with an HDL of 35 mg/dL. Your doctor will look at the full picture, not just one number.
Triglycerides are a type of fat that your body makes from the calories you don't immediately use — particularly from sugars and simple carbohydrates. High triglycerides are linked to poor diet, obesity, diabetes, and heavy alcohol consumption.
| Triglyceride Level | Classification |
|---|---|
| Below 150 mg/dL | ✅ Normal |
| 150–199 mg/dL | ⚠️ Borderline high |
| 200–499 mg/dL | 🔴 High |
| 500 mg/dL and above | 🔴 Very high — pancreatitis risk |
If you're in Europe, your cholesterol results will likely be in mmol/L instead of mg/dL (used in the US). Here's a quick conversion:
| Marker | US optimal (mg/dL) | EU optimal (mmol/L) |
|---|---|---|
| Total Cholesterol | <200 | <5.2 |
| LDL | <100 | <2.6 |
| HDL (men) | >40 | >1.0 |
| HDL (women) | >50 | >1.3 |
| Triglycerides | <150 | <1.7 |
To convert mg/dL to mmol/L for cholesterol: divide by 38.67. VitalScan Pro handles both units automatically.
High LDL or low HDL doesn't mean you need medication immediately. Lifestyle changes often make a significant difference:
If lifestyle changes aren't sufficient, your doctor may recommend medication (statins are most common). The decision depends on your full risk profile — not just the cholesterol numbers alone.
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