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Greater consumption of coffee could lead to a longer life, as explaining by two new researches published on Monday.
The discoveries have resurfaced the centuries-old discussion on coffee’s health impacts.
One study surveyed over 520,000 individuals in 10 European regions, making it the most significant study to this day on coffee and mortality, and discovered that consuming more coffee could considerably reduce an individual’s risk of death.
The 2nd research was more unusual, as it concentrated on nonwhite human populations. After surveying over 185,000 African-Americans, Native Americans, Hawaiians, Japanese-Americans, Latinos and whites, the scientists identified that coffee boosts longevity across different races.
People who consumed 2 to 4 cups a day had an 18% lower risk of death compared with individuals who did not drink coffee, as explaining the research. These findings are consistent with previous studies that had evaluated majority white human populations, said Veronica Wendy Setiawan, associate professor of preventative medicine at USC’s Keck School of Medicine, who led the research on nonwhite human populations.
” Given these very diverse populations, all these people have a various standard of livings. They have very different nutritional habits and different susceptibilities– and we still find identical patterns,” Setiawan said.
The new research demonstrates that there is a more powerful biological possibility for the relationship between coffee and longevity and found that mortality was inversely related to coffee consumption for heart disease, cancer, respiratory disease, stroke, diabetes and kidney disease.
The research on European countries uncovered an inverse association between coffee and liver disease, suicide in men, cancer in women, digestive diseases and circulatory diseases. Those who consumed 3 or more cups a day had a lower risk of all-cause death than people who did not drink coffee. Both types of research were released in the Annals of Internal Medicine.
” We looked at several countries across Europe, where the way the population consumes coffee and prepares coffee is quite different,” said Marc Gunter, reader in cancer epidemiology and prevention at Imperial College’s School of Public Health in the UK, who co-authored the European research.
“The fact that we saw the same relationships in different countries is sort of the implication that it’s something about coffee rather than its something about the way that coffee is prepared or the way it’s drunk,” he said.
The biological benefits and cautions.
Coffee is a complicated mixture of components, some of which have been revealed in laboratories to have biological effects, Gunter said.
Researchers have shown that particular components have neuroprotective and anti-inflammatory properties that can assist minimize risk for illnesses like Parkinson’s disease.
In the European research, individuals who were consuming coffee had a tendency to have reduced levels of inflammation, healthier lipid profiles, and better glucose control compared with those who weren’t. It is still uncertain which particular components provide health benefits, but Gunter said he would be interested in exploring this further.
Both pieces of research divided smokers from nonsmokers since smoking is known to decrease lifespan and is linked to various diseases. They found that coffee had inverse effects on mortality for smokers too.
” Smoking doesn’t seem to soften the effects of coffee”, Gunter said. “It didn’t matter whether you smoked or not. There was still a potential beneficial affect of coffee on mortality.”
Dr. Alberto Ascherio, professor of Epidemiology and Nutrition at Harvard T.H. Chan School of Public Health, said people should be wary of this finding.
“Even if it was in some way accurate, it doesn’t make sense to me, because by smoking, you increase your mortality several-fold. If you reduce it by 10% drinking coffee, give me a break,” said Ascherio, who was not involved in the research.
“I think it’s a risky recommendation because it suggests that a smoker can counteract the effects of smoking by drinking coffee, which is borderline insane.”
The researchers complement work that has been accomplished on coffee and mortality, he said, and it has been logically recorded that coffee consumers have a lower risk of death.
With all observations from previous researches, however, it’s hard to ignore the probability that coffee consumers are just healthier, to begin with, Gunter said.
Individuals who stay away from coffee, especially in areas like the US and Europe, where drinking the beverage is very familiar, may do so because they have health problems. Their higher mortality rate could be a result of them being less healthy, to begin with.
” I think that the strong verdict is that if you’re a coffee consumer, keep drinking your coffee and be happy,” Ascherio said. And if you’re not? “I think you can go on drinking your tea or water without a problem.”
Gunter and Setiawan stand a bit more firmly on coffee as a health benefit.
” The takeaway message would be that drinking a couple cups of coffee a day doesn’t do you any harm, and actually, it might be doing you some good,” he said.
” Moderate coffee consumption can be added into a healthy diet plan and way of living,” Setiawan said. “This researches and the previous researches recommend that for a majority of people, there’s no long term risk from consuming coffee.”