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LDL (low-density lipoprotein) cholesterol

LDL (low-density lipoprotein) cholesterol is "bad" cholesterol, which carries mostly fat and only a small amount of protein from the liver to other parts of the body. A high LDL cholesterol level is considered a risk factor for coronary artery disease (CAD) because, under certain conditions, it can cause hardening of the arteries (atherosclerosis).

Cholesterol is measured either in milligrams per deciliter of blood (mg/dL) or in millimoles per liter of blood (mmol/L).

  • An LDL cholesterol level of less than 100 mg/dL (less than 2.6 mmol/L) is considered optimal.
  • 100 to 129 (2.6 to 3.35) is considered near optimal.
  • 130 to 159 (3.35 to 4.10) is considered borderline high.
  • 160 to 189 (4.12 to 4.88) is considered high.
  • 190 and above (4.90 to 4.88) is considered very high.

People who have at least a moderate risk for developing heart disease (especially those who have diabetes) may benefit from lowering their LDL cholesterol levels. The specific target LDL level depends on a person's number and type of risk factors.

Author Jeannette Curtis
Author Caroline Rea, RN, BS, MS
Editor Kathleen M. Ariss, MS
Editor Susan Van Houten, RN, BSN, MBA
Associate Editor Tracy Landauer
Associate Editor Pat Truman
Primary Medical Reviewer Patrice Burgess, MD
- Family Medicine
Primary Medical Reviewer Adam Husney, MD
- Family Medicine
Primary Medical Reviewer Kathleen Romito, MD
- Family Medicine
Last Updated May 25, 2007

WebMD Medical Reference from Healthwise

Last Updated: May 25, 2007
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