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LDL Cholesterol Formula:
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LDL (Low-Density Lipoprotein) cholesterol, often called "bad cholesterol," can build up in the walls of your arteries, increasing your risk of heart disease and stroke. Levels above 130 mg/dL are considered high and may require medical attention.
The calculator uses the Friedewald formula:
Where:
Explanation: This formula estimates LDL cholesterol levels when direct measurement is not available. It's most accurate when triglyceride levels are below 400 mg/dL.
Details: Monitoring LDL cholesterol is crucial for cardiovascular risk assessment and management. High LDL levels are a major risk factor for atherosclerosis and coronary artery disease.
Tips: Enter total cholesterol, HDL cholesterol, and triglycerides in mg/dL. All values must be valid positive numbers. For accurate results, use fasting lipid panel values.
Q1: What is considered high LDL cholesterol?
A: LDL levels above 130 mg/dL are generally considered high, though optimal levels are below 100 mg/dL, and very high risk patients may need levels below 70 mg/dL.
Q2: When is this formula not accurate?
A: The formula is less accurate when triglyceride levels exceed 400 mg/dL, in non-fasting samples, or in certain medical conditions like diabetes.
Q3: How often should cholesterol be checked?
A: Adults should have cholesterol checked every 4-6 years, or more frequently if you have risk factors for heart disease or previous high cholesterol.
Q4: What factors affect LDL levels?
A: Diet, exercise, weight, genetics, age, gender, and certain medications can all affect LDL cholesterol levels.
Q5: How can I lower my LDL cholesterol?
A: Lifestyle changes include a heart-healthy diet, regular exercise, maintaining a healthy weight, and quitting smoking. Medications like statins may be prescribed if needed.