What is HDL cholesterol?

HDL cholesterol

HDL cholesterol is composed of lipoproteins that transport cholesterol from the arteries to the liver where it is destroyed. It is known as “good cholesterol” because it helps to prevent the accumulation of cholesterol in blood vessels, a cardiovascular risk factor.

Summary

  1. What is HDL cholesterol?
  2. Why prescribe an HDL cholesterol dosage?
  3. How is HDL cholesterol measured?
  4. Blood Dosage of HDL Cholesterol
  5. Coronary Risk for HDL Cholesterol
  6. High HDL cholesterol
  7. Low HDL cholesterol
  8. How to have a high HDL (cholesterol)?

What is HDL cholesterol?

Cholesterol consists of lipids circulating in the blood. One must distinguish the cholesterol HDL, known as “good cholesterol”, of the cholesterol LDL, called “bad cholesterol”. HDL cholesterol lipoproteins “pick up” the cholesterol that accumulates in the blood vessels (veins and arteries) to transport it to the liver where it is destroyed. It clears the arteries of bad fats, reducing the risk of atheroma (fatty deposition that forms on the inner wall of an artery and hinders blood flow).

Why prescribe an HDL cholesterol dosage?

The determination of HDL cholesterol is prescribed to assess the risk of atheroma.

How is HDL cholesterol measured?

The sample is taken from venous blood (usually at the bend of the elbow).

How to prepare:

  • Take the prescription order, the Vitale Card and the Mutual Card.
  • Take the blood test on an empty stomach , preferably 12 hours after the start of the fast.

Blood Dosage of HDL Cholesterol

The determination of HDL cholesterol determines the amount of LDL (bad cholesterol) cholesterol in the blood.

NORMAL RESULTS

 

Age

Wife

Man

g / L

mmol / L

g / L

mmol / L

Less than 4 years 0.12 to 0.37 0.31 to 0.96 0.16 to 0.50 0.41 to 1.29
5-9 years from 0.31 to 0.47 0.80 to 1.22 0.41 to 0.60 1.06 to 1.55
10-14 years from 0.31 to 0.47 0.80 to 1.22 0.43 to 0.63 1.11 to 1.63
15-19 years from 0.31 to 0.47 0.80 to 1.22 0.45 to 0.70 1.16 to 1.80
20-49 years from 0.37 to 0.65 0.96 to 1.68 0.50 to 0.82 1.29 to 2.12
50-59 years 0.42 to 0.65 1.09 to 1.68 0.58 to 0.92 1.50 to 2.40
More than 60 years 0.40 to 0.68 1.03 to 1.76 0.60 to 0.94 1.55 to 2.45

PHYSIOLOGICAL VARIATIONS

HDL cholesterol may increase depending on:

  • Of age: it increases with age;
  • Of sex: the values are higher in women;
  • Of physical activity: it increases HDL levels.
  • A diet low in cholesterol and high in polyunsaturated fatty acids

Coronary Risk for HDL Cholesterol

 

Risk

Man

Wife

 mmol / l  g / l  mmol / l  g / l
0.5 1.55 0.60 1.81 0.70
1.0 1.16 0.45 1.42 0.55
1.5 0.90 0.35 1.16 0.45
2.0 0.64 0.25 0.90 0.35
> 2 <0.64 <0.25 <0.90 <0.35

High HDL cholesterol

Overall, high HDL cholesterol levels are considered to promote protection against cardiovascular complications, including coronary artery disease.

Rates should be interpreted as part of an overall cardiovascular risk assessment that will take into account, among other factors,  total cholesterol , other cholesterol fractions,  triglycerides , family history, Lifestyle ( physical activity ,  tobacco ,  alcohol ,  food , etc.).

High HDL cholesterol can be related to:

  • Certain medications such as lipid-lowering agents (fibrates), vitamin C, anti-epileptics, insulin and estrogen-progestogens.
  • Alcohol consumption: increases HDL-3 anti-atherogenic levels

Low HDL cholesterol

Low HDL cholesterol may be related to:

  • at the cigarette shop ;
  • Progestins (mostly nonsteroidal);
  • To diabetes .

How to have a high HDL (cholesterol)?

To raise HDL levels, a healthy and balanced diet combined with physical activity is essential.

  • Decrease intake of saturated fatty acids and trans fatty acids;
  • Opt for a diet high in mono and poly unsaturated fats that are found especially in rapeseed oil, nut oil, olive oil, sunflower oil or soybean oil;
  • Introduce vegetable phytosterol products into the diet ;
  • Do sports regularly, half an hour to 1 hour 3 to 4 times a week;
  • Use endurance sports (such as walking, jogging, swimming or cycling) (after doctor’s agreement).

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