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. Higher LDL levels are associated with increased risk of cardiovascular disease.

2. How Does the Calculator Work?

The calculator uses the Friedewald formula:

Where:

• \( TC \) — Total Cholesterol (mmol/L)
• \( HDL \) — HDL Cholesterol (mmol/L)
• \( TG \) — Triglycerides (mmol/L)

Note: This formula provides an estimation of LDL cholesterol levels. At 3.9 mmol/L or higher, LDL is considered high risk for cardiovascular disease.

3. Importance of LDL Calculation

Details: Monitoring LDL cholesterol levels is crucial for assessing cardiovascular risk and guiding cholesterol management strategies, including lifestyle changes and medication therapy.

4. Using the Calculator

Tips: Enter total cholesterol, HDL cholesterol, and triglycerides in mmol/L. All values must be positive numbers. The calculator will estimate your LDL level and indicate if it's at high risk (≥3.9 mmol/L).

5. Frequently Asked Questions (FAQ)

Q1: Why is 3.9 mmol/L considered high risk?
A: LDL levels of 3.9 mmol/L or higher are associated with significantly increased risk of atherosclerosis and cardiovascular events.

Q2: Are there limitations to this calculation method?
A: The formula may be less accurate when triglyceride levels are very high (>4.5 mmol/L) or in certain medical conditions.

Q3: How often should LDL be checked?
A: Adults should have cholesterol checked every 4-6 years, or more frequently if you have risk factors for heart disease.

Q4: What are optimal LDL levels?
A: For most adults, optimal LDL is below 2.6 mmol/L. Levels between 2.6-3.3 mmol/L are borderline high.

Q5: How can I lower my LDL cholesterol?
A: Lifestyle changes include a heart-healthy diet, regular exercise, maintaining a healthy weight, and if needed, cholesterol-lowering medications.