Dyslipidemia in Obesity

The characteristic lipid disorder associated with obesity is similar to that observed in metabolic syndrome: high-density lipoprotein cholesterol (HDL-C) levels are reduced, while triglyceride concentrations are elevated.

Glucose metabolism and lipid metabolism are closely interconnected. A diet high in carbohydrates, particularly refined carbohydrates, promotes elevated plasma triglyceride levels through increased hepatic lipogenesis.

Weight loss improves insulin sensitivity and typically reduces triglyceride concentrations by approximately 20–30%. In addition, weight reduction lowers low-density lipoprotein cholesterol (LDL-C) levels and increases HDL-C concentrations, thereby improving the overall cardiovascular risk profile.

References

  1. Grundy SM. Metabolic syndrome update. Trends in Cardiovascular Medicine. 2016;26(4):364–373.
  2. Grundy SM, Brewer HB Jr, Cleeman JI, Smith SC Jr, Lenfant C. Definition of Metabolic Syndrome. Report of the National Heart, Lung, and Blood Institute/American Heart Association Conference. Circulation. 2004;109:433–438.
  3. Mach F, Baigent C, Catapano AL, et al. 2019 ESC/EAS Guidelines for the management of dyslipidaemias: lipid modification to reduce cardiovascular risk. European Heart Journal. 2020;41:111–188.
  4. American Diabetes Association Professional Practice Committee. Standards of Care in Diabetes—2025. Diabetes Care. 2025;48(Suppl. 1)–S350.
  5. Jensen MD, Ryan DH, Apovian CM, et al. 2013 AHA/ACC/TOS Guideline for the Management of Overweight and Obesity in Adults. Circulation. 2014;129(Suppl 2)–S138.
  6. Klein S, Gastaldelli A, Yki-Järvinen H, Scherer PE. Why does obesity cause diabetes? Cell Metabolism. 2022;34:11–20.
  7. Ginsberg HN, Packard CJ, Chapman MJ, et al. Triglyceride-rich lipoproteins and their remnants: metabolic insights, role in atherosclerotic cardiovascular disease, and emerging therapeutic strategies. European Heart Journal. 2021;42:4791–4806.
  8. Parks EJ, Hellerstein MK. Carbohydrate-induced hypertriacylglycerolemia: historical perspective and review of biological mechanisms. American Journal of Clinical Nutrition. 2000;71:412–433.
  9. Hall KD, Guo J. Obesity energetics: body weight regulation and the effects of diet composition. Gastroenterology. 2017;152:1718–1727.
  10. National Lipid Association. Recommendations for Patient-Centered Management of Dyslipidemia: Part 1 and Part 2. Journal of Clinical Lipidology. 2015;9:129–169.

These references support the following statements:

  • Obesity is characterized by high triglycerides and low HDL cholesterol.
  • Dyslipidemia is a hallmark of the metabolic syndrome.
  • Insulin resistance links glucose and lipid metabolism.
  • Diets rich in refined carbohydrates increase hepatic triglyceride synthesis.

Weight loss improves insul