LDL/HDL Ratio Calculator
What is the LDL to HDL Ratio?
The LDL to HDL ratio is a specific clinical marker used by healthcare professionals to assess your risk of cardiovascular disease. While total cholesterol levels are important, the balance between "Bad" cholesterol (Low-Density Lipoprotein) and "Good" cholesterol (High-Density Lipoprotein) often provides a more accurate picture of heart health.
How to Calculate LDL HDL Ratio
Calculating the ratio is mathematically straightforward. You take your LDL value and divide it by your HDL value. For example, if your LDL is 150 mg/dL and your HDL is 50 mg/dL, your ratio is 3.0.
Formula: LDL / HDL = Ratio
Interpreting Your Results
A lower ratio generally indicates a lower risk of plaque buildup in the arteries. Here is a general guideline for interpreting your calculated ratio:
| LDL/HDL Ratio | Risk Category |
|---|---|
| Below 2.0 | Optimal balance |
| 2.0 – 3.5 | Good/Average risk |
| 3.5 – 5.0 | Moderate risk |
| Above 5.0 | High cardiovascular risk |
Why HDL and LDL Matter
LDL (Low-Density Lipoprotein): Often called "bad" cholesterol because it contributes to fatty buildups in arteries (atherosclerosis). This narrows the arteries and increases the risk for heart attack and stroke.
HDL (High-Density Lipoprotein): Often called "good" cholesterol because it acts as a scavenger, carrying LDL cholesterol away from the arteries and back to the liver, where it is broken down and passed from the body.
Realistic Examples
Case A: An individual has an LDL of 100 and an HDL of 60. Their ratio is 1.67. This is considered an optimal balance, suggesting high protection against heart disease.
Case B: An individual has an LDL of 190 and an HDL of 35. Their ratio is 5.43. This high ratio indicates a significant imbalance and potentially high cardiovascular risk, even if total cholesterol numbers vary.