Established risk factors and coronary artery disease: the Framingham Study

Area of Science:

• Cardiology
• Preventive Medicine
• Epidemiology

Background:

• Established risk factors for coronary artery disease (CAD) include age, cholesterol levels (total, HDL), blood pressure, smoking, diabetes, and left ventricular hypertrophy.
• Risk factor assessment has evolved, recognizing that elevated systolic and diastolic blood pressure increase CAD risk, even without hypertension.
• While traditional lipids are strongly linked to CAD, newer markers like apolipoproteins and genetic factors offer minimal additional predictive value.

Purpose of the Study:

• To review and contextualize the established and emerging risk factors for coronary artery disease (CAD).
• To evaluate the predictive utility of various biological and lifestyle factors in CAD development.
• To highlight the ongoing importance of traditional risk factors in clinical prediction models.

Main Methods:

• Review of existing literature on coronary artery disease (CAD) risk factors.
• Analysis of the predictive power of traditional versus novel risk markers.
• Assessment of the role of lifestyle factors in CAD risk stratification.

Main Results:

• Traditional risk factors such as age, blood pressure, and cholesterol remain primary predictors of CAD.
• Hematologic factors like fibrinogen and leukocyte count show consistent association with CAD in observational studies.
• Among lifestyle factors, only cigarette smoking has demonstrated a consistent, independent effect on CAD prediction.

Conclusions:

• Current CAD prediction models predominantly rely on traditional biological factors over behavioral ones.
• Further research may be needed to clarify the independent roles of obesity and adiposity in CAD.
• Cigarette smoking remains a critical modifiable risk factor for CAD.