What is LDL Blood Test? Normal Levels, Causes of High LDL Levels

What is LDL Blood Test? Normal Levels, Causes of High LDL Levels
1. What is LDL?
Answer: LDL stands for Low-Density Lipoprotein, often referred to as "bad cholesterol." It carries cholesterol from the liver to tissues throughout the body but can build up in artery walls, increasing the risk of heart disease and stroke.
2. Why is LDL called "bad cholesterol"?
Answer: LDL is called "bad cholesterol" because high levels can lead to plaque buildup in arteries (atherosclerosis), narrowing them and reducing blood flow, which can result in heart attacks or strokes.
3. What is the normal range for LDL cholesterol?
Answer: The optimal LDL cholesterol level is less than 100 mg/dL. Levels of 100-129 mg/dL are near optimal, 130-159 mg/dL is borderline high, 160-189 mg/dL is high, and 190 mg/dL or above is very high.
4. How is LDL measured?
Answer: LDL cholesterol is measured through a blood test called a lipid panel, which also checks total cholesterol, HDL (good cholesterol), and triglycerides.
5. What causes high LDL levels?
Answer: High LDL levels can be caused by:
A diet high in saturated fats and trans fats.
Lack of physical activity.
Smoking.
Genetic factors (familial hypercholesterolemia).
Obesity and certain medical conditions, like diabetes or hypothyroidism.
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