High density lipoprotein cholesterol and mortality. The Framingham Heart Study

Area of Science:

• Cardiovascular Epidemiology
• Lipid Metabolism
• Mortality Risk Factors

Background:

• High-density lipoprotein cholesterol (HDL-C) plays a crucial role in reverse cholesterol transport.
• Previous research suggests a link between HDL-C levels and cardiovascular disease risk.
• The association between low HDL-C and overall mortality requires further investigation.

Purpose of the Study:

• To investigate the association between high-density lipoprotein cholesterol (HDL-C) levels and mortality.
• To determine if HDL-C is an independent predictor of all-cause, cardiovascular disease (CVD), and coronary heart disease (CHD) mortality.
• To examine these associations separately in men and women.

Main Methods:

• Analysis of 12-year follow-up data from 2748 participants in the Framingham Heart Study (ages 50-79).
• Participants were categorized into HDL-C quintiles.
• Mortality risks were calculated and adjusted for standard cardiovascular risk factors.

Main Results:

• Low HDL-C levels were significantly associated with increased all-cause mortality in men and women.
• Low HDL-C demonstrated a potent association with cardiovascular disease and coronary heart disease (CHD) mortality in both sexes.
• HDL-C was not associated with cancer death in continuous variable analyses.

Conclusions:

• High-density lipoprotein cholesterol (HDL-C) is a powerful predictor of coronary heart disease (CHD) death in both men and women.
• Low HDL-C levels are linked to increased overall mortality and cardiovascular disease mortality.
• The predictive value of HDL-C for other causes of death is less consistent.