The preventive benefits of coffee for cardiovascular disease and heart disease are exposed in a pair of studies

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Two studies presented at the annual meeting of the American College of Cardiology show the safety and effectiveness of regular coffee consumption in relation to cardiovascular disease and heart disease, as well as mortality.

Two studies presented at ACC.22, the annual meeting of the American College of Cardiology, show the safety and efficacy of regular coffee consumption on several adverse effects of cardiovascular disease (CVD) and heart disease, as well as mortality. Both used data from the UK Biobank.

The first study examined the links between incident arrhythmia, cardiovascular disease (including coronary heart disease [CHD]heart failure [CCF]and stroke), and mortality and habitual coffee consumption, analyzing the results according to 6 categories: 0, less than 1, 2 to 3, 4 to 5 and more than 5 cups per day.1 Data were self-reported on participant questionnaires for 382,535 people with no known heart disease, most of whom were female (52%); the mean (SD) age was 57 (13) years. The follow-up was 10 years.

The lowest risks differed by total number of cups per day. For all-cause mortality and the risks of CVD, CAD, and CCF, the lowest risk was observed when 2–3 cups were drunk daily, for reduced RRs of 0.86 (95% CI, 0 .83-0.90), 0.91 (95% CI, 0.88-0.94), 0.90 (95% CI, 0.87-0.93) and 0.85 (95% CI, 0.81-0.90), respectively. Risk of stroke was lowest (HR, 0.85; 95% CI, 0.75-0.96) with less than one cup per day, and risk of cardiovascular mortality was lowest (HR , 0.83; 95% CI, 0.75-0.93) at the 1 cup/day mark.

With regular coffee consumption linked to reduced risks of cardiovascular and all-cause mortality, CVD, and incident arrhythmia, the researchers concluded that a healthy diet can include drinking daily.

In the second study, which also had a 10-year follow-up and examined outcomes related to 0, less than 1, 2 to 3, 4 to 5, and more than 5 cups of coffee per day, participants (n=34,279) had various forms of CVD at baseline.2 CVDs were also a compound of CHD, CCF and AVC.

According to a statement on the findings, no elevated risk of heart rhythm irregularities was observed with any amount of coffee consumption and survival was found to be particularly improved when consuming 2-3 cups/ day (HR, 0.92; 95% CI, 0.86-0.99).

A lower overall risk of mortality was observed in the 70.3% of participants who suffered from arrhythmia at baseline. Subdividing this result by the total number of cups consumed, drinking one cup per day was associated with the greatest reduced risk of arrhythmia mortality (15%; RR, 0.85; 95% CI, 0.78- 0.94) and by atrial fibrillation/atrial flutter (18%; HR, 0.82; 95% CI, 0.73-0.93) in particular.

The authors noted that they undertook their studies because of the large study populations available in the UK Biobank compared to previous studies of coffee consumption and cardiovascular outcomes.1 and because previous studies have not focused their research on the impact of coffee making on populations with cardiovascular disease or prevalent arrhythmia.2

Further studies in this area are needed because of the self-reported nature of the data used, that the researchers could not control for dietary influences, and because the participants were mostly white.

Reference

1. Chieng D, Canovas R, Segan L, et al. Effects of habitual coffee consumption on incident cardiovascular disease, arrhythmia and mortality: results from UK Biobank. Presented to: ACC.22; April 2-4; Washington DC.

2. Kistler P, Chieng D, Canovas R, et al. regular coffee consumption is associated with better mortality in prevalent cardiovascular diseases. Presented to: ACC.22; April 2-4; Washington DC.

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