The largest analysis of the role of coffee in heart disease and mortality, which shows excellent news for regular coffee drinkers, has been combined in three related studies that the authors believe.
Studies presented at the American College of Cardiology (ACC) annual convention in Washington DC last month, three days later, found that daily coffee consumption was associated with a lower risk of heart disease and dangerous heart rhythm and overall longevity.
One study further found that coffee consumption was associated with improved outcomes for people with existing cardiovascular disease.
“While coffee can speed up the heartbeat, some people are concerned that drinking it can cause some heart problems or worsen,” said Peter M. Kisler, lead author of the Alfred Hospital and Baker Heart Institute in Melbourne, Australia, in an ACC announcement. “This is where general medical advice for stopping coffee can come in handy. But our data suggest that daily coffee consumption should not be discouraged, but should be included as part of a healthy diet for people with and without heart disease. “
Kissler was one of 12 authors to be credited with three studies, all contributing from Alfred Hospital or its related medical research institution, The Baker Institute. Funding for the study, which was published in a supplementary issue of the ACC Journal this month, was not disclosed.
The three studies collected data from all UK biobanks, a large database containing data on more than half a million participants who received follow-up for at least 10 years.
The UK Biobank has provided a wealth of coffee-related research in recent years, including additional large-scale research on heart disease, as well as major studies related to liver health and coffee consumption with reduced dementia.
Involving 382,535 people aged 57, the first study examined people who did not have heart disease. Those who reported drinking 2-3 cups of coffee per day had a 10-15% lower risk of heart disease or death than coffee drinkers. Those who drank more or less coffee each day had fewer benefits, although those who drank one cup of coffee each day had the lowest risk of stroke or heart-related death.
The second study involved 34,279 people with some form of cardiovascular disease. Drinking coffee was associated with a lower risk of death during the study period and was not associated with a higher risk of heart rhythm problems.
The third study explored the relationship between heart health and coffee types, with lower mortality rates among all types of coffee (instant, ground, caffeinated, decaffeinated). The authors found that caffeinated coffee provided the most optimal results, “without any cardiovascular benefit in choosing decaf over caffeinated coffee.”
The authors point to a number of important limitations of the study, including the fact that many participants were predominantly white and did not control excess dietary factors, including cream or sugar as a coffee supplement.
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