Even drinking less than one cup of coffee per day lowers the risk of premature death due by 6 percent, the study found. It includes about half a million Brits who contributed their data and DNA to the United Kingdom biobank, and it finds an inverse relationship between people drinking up to eight or more cups per day and all-cause mortality.
Previous research has shown similar results.
But something people may not realize that is also beneficial when it comes to coffee, especially during these sweltering summer months, is that coffee does not dehydrate you. 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. The researchers found that the more cups of coffee people drank, the less likely they were to die during the study period.More news: Trump to Scrap Obama-Era Race Guidelines in College Admissions
I hope you're reading this while drinking a cup of coffee. It can just say that people who drink coffee are less likely to die early.
Researchers Erikka Loftfield, Marilyn C. Cornelis and Neil Caporaso used data collected over a decade from around half a million British volunteers.
"There has been concern about the health effects of heavy coffee drinking, particularly in participants with common genetic polymorphisms that affect caffeine metabolism", the researchers wrote. "But when the data were looked at more carefully, and more factors were controlled for, and more contemporary methods of producing the coffee and consuming the coffee were taken into consideration, it seems not only were those potential negative effects not corroborated, but it turns out that a lot of positive effects of coffee were identified".
The results don't prove your coffee pot is a fountain of youth nor are they a reason for abstainers to start drinking coffee, said Alice Lichtenstein, a Tufts University nutrition expert who was not involved in the research. "It's the non-caffeine components that might be responsible for the association", she said.More news: Excessive heat warning issued for Louisville and Jefferson County
"But we know that within normal limits - as with something like fruit and vegetables - that if you enjoy it you might as well do so", she said.
The strongest associations were observed for ground coffee compared to instant and decaf, the authors wrote, summarizing that brewed coffee offers higher concentrations of health-protective compounds and nutrients, which promote "reduced inflammation, improved insulin sensitivity", increase blood flow and proper liver functioning.
The study didn't have enough data from people who drink that much coffee, Giovannucci said. Over the course of the 10-year study, a little more than 14,000 people died. Some prior studies had suggested that people with these gene variations could be at higher risk for cardiovascular disease, Loftfield said. And when all causes of death were combined, even slow caffeine metabolizers had a longevity boost.
He added: "Healthier coffee, free from sugar or syrup, should also be encouraged to optimize any health benefit".More news: Environment Canada issues heat warning for Simcoe County