Introduction
In this short audio feature, we explore how low-density lipoprotein (LDL)—often called “bad cholesterol”—is affected by type 2 diabetes. You’ll hear how elevated blood sugar levels disrupt normal cholesterol handling in the body, leading to changes in the structure and behavior of LDL particles.
This audio offers a concise explanation of why people with diabetes often have smaller, denser, and more harmful LDL particles, and how that change significantly increases the risk for heart disease.
✅ Key Takeaway Messages
- LDL cholesterol becomes more dangerous in people with type 2 diabetes due to changes in how it’s processed and cleared from the bloodstream.
- High blood sugar causes LDL to glycate, making it more likely to stay in circulation longer and become oxidized.
- Smaller, denser LDL particles are more atherogenic, meaning they more easily penetrate artery walls and contribute to plaque formation.
- These modified LDL particles are less recognized by normal LDL receptors and more likely to be taken up by scavenger receptors, which accelerates plaque buildup.
- People with type 2 diabetes often have normal or near-normal LDL levels, but the particles are more harmful due to these metabolic changes.
- Controlling blood sugar is key to improving LDL quality, reducing cardiovascular damage, and protecting your arteries.

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References:
- Bonilha I, Hajduch E, Luchiari B, Nadruz W, Le Goff W, Sposito AC. The Reciprocal Relationship between LDL Metabolism and Type 2 Diabetes Mellitus. Metabolites. 2021 Nov 28;11(12):807. doi: 10.3390/metabo11120807. PMID: 34940565; PMCID: PMC8708656. https://pmc.ncbi.nlm.nih.gov/articles/PMC8708656/
- Basa AL, Garber AJ. Cardiovascular disease and diabetes: modifying risk factors other than glucose control. Ochsner J. 2001 Jul;3(3):132-7. PMID: 22754389; PMCID: PMC3385778. https://pmc.ncbi.nlm.nih.gov/articles/PMC3385778/
- Bonilha I, Hajduch E, Luchiari B, Nadruz W, Le Goff W, Sposito AC. The Reciprocal Relationship between LDL Metabolism and Type 2 Diabetes Mellitus. Metabolites. 2021 Nov 28;11(12):807. doi: 10.3390/metabo11120807. PMID: 34940565; PMCID: PMC8708656. https://pubmed.ncbi.nlm.nih.gov/34940565/
- Zhang, X.; van der Vorst, E.P.C. High-Density Lipoprotein Modifications: Causes and Functional Consequences in Type 2 Diabetes Mellitus. Cells 2024, 13, 1113. https://doi.org/10.3390/cells13131113. https://www.mdpi.com/2073-4409/13/13/1113
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