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Blood Studies for Cardiovascular System III: Serum Lipid Profile01:25

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Understanding serum lipids is crucial for maintaining cardiovascular health and preventing heart disease and stroke.
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Lipids are an essential component of a balanced human diet. Triglycerides, which make up the majority of dietary lipids, are found in both saturated fats—commonly present in meat, dairy products, and certain tropical plants like coconut, and hydrogenated oils such as margarine and baking shortenings (trans fats)—and unsaturated fats, which are abundant in seeds, nuts, olive oil, and most vegetable oils. The main sources of cholesterol include egg yolks, various meats and organ...
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Lipid reference values in an Irish population.

Diarmaid Hughes1, James Crowley1, Paula O'Shea2

  • 1Department of Cardiology, University Hospital Galway, Galway, Ireland.

Irish Journal of Medical Science
|July 19, 2020
PubMed
Summary
This summary is machine-generated.

This study establishes lipid reference values for the Irish population, revealing lifelong sex-based differences in cholesterol and triglyceride levels. These findings aid in managing dyslipidaemia and cardiovascular disease risk.

Keywords:
LipidsLipoproteinsPopulation distributionsReference values

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Area of Science:

  • Clinical Biochemistry
  • Cardiovascular Health
  • Population Health

Background:

  • Limited data exists on lipid and lipoprotein reference values specific to the Irish population.
  • Understanding these values is crucial for accurate diagnosis and management of dyslipidaemia.

Purpose of the Study:

  • To establish age- and sex-specific reference intervals for key lipids in a large Irish cohort.
  • To compare methods for estimating low-density lipoprotein cholesterol (LDL-C).

Main Methods:

  • Analysis of over 110,000 lipid profiles from University Hospital Galway (2004-2017).
  • Determination of reference intervals for total cholesterol, triglycerides, HDL-C, and LDL-C across age groups (10-90+ years).
  • Comparison of Friedewald and Martin formulas for LDL-C estimation.

Main Results:

  • Significant sex-related differences in lipid distributions observed from before age 20, persisting throughout life.
  • Total and LDL cholesterol increase with age until middle age, then decline; levels differ between sexes, with crossover in mid-life.
  • Triglyceride distributions are highly skewed, especially in middle-aged males; HDL-C levels are generally lower in males and show minimal age-related change.
  • Switching LDL-C calculation methods can impact patient management.

Conclusions:

  • Provides essential lipid reference values for Irish clinical laboratories and healthcare professionals.
  • Informs public health strategies targeting dyslipidaemia as a cardiovascular disease risk factor.
  • Supports research into geographical and temporal variations in lipid parameters.