Studies show that drinking two to three cups of coffee per day can reduce the risk of developing heart problems and prolong your life.
Researchers analyzed data from nearly 400,000 people in their 50s who did not have heart disease and followed them for 10 years.
They found drinking two or three cups of coffee each day in general – corresponding to the amount consumed by the average Brit and American – was best.
These people had a 10 to 15 percent lower risk of dying from coronary heart disease, heart failure, irregular heartbeat, or any cause within a decade.
Regardless of whether participants drank instant or ground coffee—but did not find decaffeinated health benefits.
Researchers also looked at people who already had some form of heart disease, and found that two to three cups a day was associated with a lower odds of dying compared to not drinking any alcohol, although among medics There was concern that the stimulant might worsen heart issues.
Professor Peter Kistler, an expert at the Baker Heart Institute in Melbourne, Australia, who led the study, said: ‘Our data suggest that daily coffee consumption should not be discouraged, but included as part of a healthy diet for people. should be done. And without heart disease.’
Researchers in Australia found that those in their 50s who drank a caffeinated beverage two or three times a day were 10 to 15 percent less likely to have heart disease, heart failure, irregular heartbeat or die by the end of the 10-year study.
Coffee beans contain more than 100 compounds that have been linked to lower levels of inflammation and increased metabolism.
The researchers said these mechanisms may be some factor in how drinking the beverage may promote heart health.
Researchers from the Baker Heart Institute in Melbourne studied data from the UK Biobank – a database containing health information from more than half a million Britons who were monitored for 10 years.
The people in the database completed a questionnaire about how many cups of coffee they drank per day.
How much coffee should I drink?
The NHS says it is okay to drink coffee as part of a balanced diet.
In addition to caffeine, the drink contains many minerals and antioxidants.
Some studies have found that it may reduce the risk of cancer, obesity, type 2 diabetes and dementia.
However, other studies have found that it can increase the risk of suffering from high blood pressure.
The NHS warns that drinking more than four cups a day can increase blood pressure.
It recommends switching to other non-caffeinated drinks.
In the first study, the team examined data from 382,535 people aged 57, on average, who had no heart problems.
Study results, which will be shared in full next week at an American College of Cardiology conference in Washington, DC, showed that drinking two to three cups per day was associated with the greatest benefits.
By the end of the study their risk of dying from coronary heart disease, heart failure, heart rhythm problems, or any cause was 10 to 15 percent lower.
However, the team found that those who drank one cup of coffee per day had the lowest risk of having a stroke or dying from heart problems.
Professor Kistler, head of arrhythmia research at Alfred Hospital and the Baker Heart Institute, said there is ‘a whole range of mechanisms’ through which coffee may improve heart health and reduce mortality.
Organic compounds in coffee may reduce inflammation, improve insulin sensitivity — which lowers blood sugar — and boosts metabolism.
It also reduces the gut’s ability to absorb fat and blocks receptors associated with abnormal heart rhythms.
Caffeine is also known to suppress the appetite, which can lower rates of obesity and related health conditions.
In the second part of the study, the team looked at 34,279 individuals with heart disease to determine how coffee consumption affected their health.
Overall, those who drank two to three cups of coffee every day were the least likely to die over a 10-year period.
And consuming coffee in any amount did not increase the risk of developing heart rhythm problems, which some doctors attribute to a reason to reduce coffee intake.
Coffee is known to trigger an increase in heart rate and heart palpitations.
The team found that people who had atrial fibrillation — a common type of heart rhythm problem — and drank one cup of coffee per day were about 20 percent less likely to die during the 10 years of follow-up than non-coffee drinkers.
Professor Kistler said doctors ‘generally have some apprehension’ that people may continue to drink coffee if they have heart disease or an arrhythmia – an abnormal heartbeat.
He added: ‘That’s why they often mistake caution and advise them to stop drinking it altogether for fear that it could trigger a dangerous heart rhythm.
‘But our study shows that regular coffee consumption is safe and can be part of a healthy diet for people with heart disease.’
In the third branch of the study, Professor Kistler and his team investigated whether the consumption of coffee – instead, ground, caffeinated or decaf – affected the health benefits derived from the drink.
They found that the best health benefits were seen in those who drank two to three cups a day.
Drinking decaffeinated coffee was not associated with lower rates of arrhythmias or heart failure, but it did appear to protect against other forms of heart disease.
Professor Kistler said this suggests that caffeinated coffee is ‘better’.
The team noted that their findings did not take into account the participants’ diets — which may play a role in the development of cardiovascular disease — or whether they added cream, milk or sugar to their drinks.