1. What is LDL Cholesterol?

LDL (Low-Density Lipoprotein) cholesterol, often called "bad cholesterol," can build up in the walls of your arteries, making them hard and narrow. High calculated LDL >160 mg/dL indicates increased cardiovascular risk.

2. How Does the Calculator Work?

The calculator uses the Friedewald formula:

Where:

• \( TC \) — Total Cholesterol (mg/dL)
• \( HDL \) — HDL Cholesterol (mg/dL)
• \( TG \) — Triglycerides (mg/dL)

Explanation: This formula estimates LDL cholesterol levels when direct measurement is not available. Values above 160 mg/dL indicate high risk for cardiovascular disease.

3. Importance of LDL Calculation

Details: Monitoring LDL levels is crucial for assessing cardiovascular risk and guiding cholesterol management strategies. High LDL is a major risk factor for heart disease and stroke.

4. Using the Calculator

Tips: Enter total cholesterol, HDL cholesterol, and triglycerides in mg/dL. All values must be valid positive numbers. The calculator will estimate your LDL level and indicate risk status.

5. Frequently Asked Questions (FAQ)

Q1: What does high LDL cholesterol mean?
A: High LDL cholesterol (>160 mg/dL) means you have increased risk of developing cardiovascular diseases, including heart attack and stroke.

Q2: What are the normal ranges for LDL?
A: Optimal: <100 mg/dL, Near optimal: 100-129 mg/dL, Borderline high: 130-159 mg/dL, High: 160-189 mg/dL, Very high: ≥190 mg/dL.

Q3: When should I get my cholesterol checked?
A: Adults should have cholesterol checked every 4-6 years. Those with risk factors may need more frequent testing.

Q4: Are there limitations to this calculation?
A: This formula is less accurate when triglyceride levels are very high (>400 mg/dL) and should not be used in non-fasting samples.

Q5: How can I lower my LDL cholesterol?
A: Through lifestyle changes (healthy diet, regular exercise) and medication if prescribed by your doctor.