Coffee and coronary heart disease.

Area of Science:

• Cardiology
• Epidemiology
• Nutritional Science

Background:

• Coronary heart disease (CHD) remains a leading cause of mortality worldwide.
• The role of dietary factors, including coffee consumption, in CHD development is a significant area of public health research.

Purpose of the Study:

• To investigate the association between coffee consumption and the risk of developing coronary heart disease.
• To synthesize evidence from prospective cohort studies on coffee intake and coronary events.

Main Methods:

• A comprehensive literature search was conducted using Medline and bibliographic searches for articles published between 1966 and August 1991.
• Included were prospective cohort studies that provided data on daily coffee consumption and coronary events (acute myocardial infarction and/or coronary death).
• Data extraction included published and unpublished data, with cohorts categorized by coffee consumption levels to determine the incidence of coronary events.

Main Results:

• Eleven prospective studies met the inclusion criteria.
• Coffee intake of 1 to 4 cups per day showed no increased risk of coronary heart disease compared to 1 cup or less per day (odds ratio [OR], 1.01; 95% confidence interval [CI], [0.93, 1.11]).
• Higher consumption levels (4-6 cups and 6+ cups per day) also demonstrated no significant increase in risk (OR, 1.01; 95% CI, [0.90, 1.12] and OR, 1.09; 95% CI, [0.97, 1.22], respectively).

Conclusions:

• There is no statistically significant association between coffee consumption and the occurrence of coronary heart disease.
• This finding remains consistent even when not adjusting for other known coronary risk factors.
• The results suggest that moderate coffee intake is not a risk factor for developing coronary heart disease.