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 LDL levels increase the risk of heart disease and stroke.

2. How Does the Calculator Work?

The calculator uses the Friedewald formula:

Where:

• Total Cholesterol — Measured in mg/dL
• HDL — High-Density Lipoprotein (mg/dL)
• Triglycerides — Measured in mg/dL

Note: This formula is valid when triglycerides are less than 400 mg/dL. For higher levels, direct measurement is recommended.

3. Importance of LDL Calculation

Details: Monitoring LDL cholesterol is crucial for assessing cardiovascular risk and guiding treatment decisions. Levels above 160 mg/dL are considered high and may require lifestyle changes or medication.

4. Using the Calculator

Tips: Enter total cholesterol, HDL, and triglycerides in mg/dL. All values must be positive numbers. For accurate results, use fasting lipid panel values.

5. Frequently Asked Questions (FAQ)

Q1: What is considered a healthy LDL level?
A: Optimal LDL is less than 100 mg/dL. Near optimal is 100-129 mg/dL. Borderline high is 130-159 mg/dL. High is 160-189 mg/dL. Very high is 190 mg/dL and above.

Q2: Why is LDL called "bad cholesterol"?
A: LDL particles can accumulate in artery walls, forming plaques that narrow arteries and increase risk of heart attack and stroke.

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. Always use fasting samples for accurate results.

Q4: Are there limitations to this calculation?
A: The formula is less accurate when triglycerides exceed 400 mg/dL, in non-fasting samples, or in certain medical conditions like diabetes.

Q5: How can I lower my LDL cholesterol?
A: Lifestyle changes include healthy diet, regular exercise, maintaining healthy weight, and avoiding tobacco. Medications like statins may be prescribed when needed.