Atherogenic lipoproteins are all EXCEPT

Options

A. LDL
B. HDL
C. VLDL
D. Chylomicrons

Answer

To solve the question "Atherogenic lipoproteins are all EXCEPT," we need to identify which of the given options is not considered atherogenic.

### Step-by-Step Solution:

1. **Understand Atherogenic Lipoproteins**: Atherogenic lipoproteins are those that contribute to the formation of atherosclerosis, which is the buildup of fats, cholesterol, and other substances in and on the artery walls.

2. **Analyze the Options**:
- **LDL (Low-Density Lipoprotein)**: Known as "bad cholesterol," LDL is a major contributor to atherosclerosis. It is considered atherogenic.
- **HDL (High-Density Lipoprotein)**: Often referred to as "good cholesterol," HDL helps remove cholesterol from the bloodstream and is considered anti-atherogenic.
- **VLDL (Very-Low-Density Lipoprotein)**: Similar to LDL, VLDL is also considered atherogenic as it contributes to plaque buildup in arteries.
- **Chylomicrons**: These are lipoproteins that transport dietary lipids from the intestines to other locations in the body and can also be considered atherogenic.

3. **Identify the Non-Atherogenic Lipoprotein**: From the analysis, we see that HDL is the only lipoprotein that does not contribute to atherosclerosis and is instead protective against it.

4. **Conclusion**: Therefore, the answer to the question is **HDL**.

### Final Answer:
**HDL** (High-Density Lipoprotein) is the non-atherogenic lipoprotein among the options provided.

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