The speed at which a person metabolized caffeine didn't seem to affect longevity, despite prior research that suggested coffee consumption might be related to increased risks of high blood pressure and heart attack among people who metabolize caffeine slowly. About one-third of those surveyed said they drank between two and three cups of coffee each day, and 10,000 of them drank eight or more cups each day.
"This study provides further evidence that coffee drinking can be part of a healthy diet and offers reassurance to coffee drinkers", wrote the National Cancer Institute (NCI) researchers, who analyzed data from almost 500,000 people through the U.K. Biobank, a large-scale genomic and health database.
"During the next decade, 14,225 participants died, mostly of cancer or heart disease", the AP reported.
PHOTO:A woman drinks an ice coffee in this undated stock photo. The benefit was seen with instant, ground, decaf, and in people with genetic glitches affecting how their bodies use caffeine. There is, it seems, nothing called too much coffee. nearly.
Context like the general recommendation from experts to stick to 400 mg of caffeine per day (about four cups of coffee) - too much of the stuff tends to lead to problems like insomnia or heartburn.
The results do not prove that your coffee pot is a fountain of youth, nor are they a reason for abstainers to start drinking coffee, said Alice Lichtenstein, a nutrition expert at Tufts University in the USA who was not involved in the research.
But for some coffee lovers, this may be the only evidence needed to enjoy more coffee.
Medical News Today notes that there are scientists who have been studying the polyphenols, which is a compound that's found in reduced levels in instant coffee.
In other words while coffee drinking has some benefits especially in dealing with non-communicable diseases, your genes decide how well you metabolise caffeine.
That rate dropped to 6% for those who drink less than one cup of coffee daily. But the new study suggests even higher amounts of coffee could be beneficial. Part of the benefit, he points out, is that coffee simply makes people happy.
But, "drinking coffee is not a miracle in a cup, and is unlikely to prevent the consequences of an unhealthy lifestyle, such as the typical Western diet or smoking tobacco", Heller noted. But she says the results reinforce previous research and add additional reassurance for coffee drinkers. An editorial by Eliseo Guallar from the Johns Hopkins Bloomberg School of Public Health in Baltimore, Maryland, said there is no way to know if coffee prevents chronic disease and reduces mortality because there are too many factors to weigh like why people start drinking coffee.
When all causes of death were combined, even slow caffeine metabolisers had a longevity boost.
The research did not include whether participants drank coffee black or with cream and sugar.
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