Determinants of plasma lipoproteins and coagulation factors in men from Caerphilly, South Wales

Area of Science:

• Cardiovascular disease epidemiology
• Nutritional science
• Public health

Background:

• Ischemic heart disease (IHD) is a leading cause of mortality globally.
• Major risk factors include dyslipidemia (abnormal cholesterol and triglyceride levels) and elevated fibrinogen.
• Understanding the determinants of these risk factors is crucial for prevention strategies.

Purpose of the Study:

• To investigate the dietary, social, and constitutional factors associated with plasma concentrations of major IHD risk factors in middle-aged men.
• To quantify the variance in these risk factors explained by identified determinants.

Main Methods:

• Cross-sectional study involving 711 men aged 30-69 from the general population.
• Measured plasma concentrations of high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), total cholesterol (T-C), triglycerides, and fibrinogen.
• Analyzed associations with dietary intake, social factors, constitutional factors (e.g., body mass index), and lifestyle habits (smoking, alcohol).

Main Results:

• Six variables explained 12.6% of the variance in HDL-C.
• Significant determinants explained 8.4% of LDL-C variance, 7.5% of T-C variance, and 18.5% of triglyceride variance.
• Fibrinogen concentrations were significantly associated with age, smoking, BMI, alcohol consumption, and cereal fiber intake, explaining 24.2% of the variance.

Conclusions:

• Dietary, social, and constitutional factors significantly influence major risk factors for ischemic heart disease in men.
• Cereal fiber intake, alcohol consumption, smoking, BMI, and age are key determinants of fibrinogen levels.
• These findings support the potential for dietary interventions to modify IHD risk factors.