Tea consumption and mortality after acute myocardial infarction

Area of Science:

• Cardiovascular Medicine
• Epidemiology
• Nutritional Science

Background:

• Existing research suggests tea consumption may reduce mortality in cardiovascular disease patients.
• However, the specific impact of tea intake on mortality following acute myocardial infarction (AMI) remains unclear.

Purpose of the Study:

• To investigate the association between pre-infarction tea consumption and long-term mortality in patients hospitalized with AMI.
• To determine if habitual tea intake influences survival rates after a heart attack.

Main Methods:

• A prospective cohort study involving 1900 patients hospitalized with confirmed AMI.
• Self-reported weekly caffeinated tea consumption (none, <14 cups, ≥14 cups) was assessed for the year preceding infarction.
• Cox proportional hazards regression models were used to analyze long-term mortality, adjusting for clinical and sociodemographic factors.

Main Results:

• Compared to non-drinkers, moderate (<14 cups/week) and heavy (≥14 cups/week) tea drinkers showed significantly lower mortality rates.
• Adjusted hazard ratios for mortality were 0.72 (95% CI, 0.55-0.94) for moderate and 0.56 (95% CI, 0.37-0.84) for heavy tea drinkers.
• The observed association between tea consumption and reduced mortality was consistent for both total and cardiovascular mortality.

Conclusions:

• Habitual tea consumption in the year prior to experiencing an acute myocardial infarction is associated with a significant reduction in post-infarction mortality.
• These findings suggest a potential cardioprotective effect of regular tea intake in patients recovering from a heart attack.