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Coffee lovers may not have to feel that familiar pang of guilt when pouring themselves yet another cup of joe for the day. A new study found that drinking coffee, even
more than 8 cups a day, was linked with a lower risk of death within a 10-year follow-up period. However, the researchers stressed that the study only found an association with
coffee and longevity and didn't prove that coffee leads to a longer life. "Although these findings may reassure coffee drinkers, these results are from an observational study and should be interpreted
cautiously," said lead study author Erikka Loftfield, a research fellow at the National Cancer Institute (NCI). In the study, published today (July 2) in the journal JAMA Internal Medicine, Loftfield and
her team at the NCI analyzed data from nearly 500,000 people who took part in the U.K. Biobank study. That project gathered health information from more than 9 million people. As
a part of the Biobank study, people were asked how many cups of coffee they drank daily, including decaf. The participants also answered questions about their general health, education, and smoking
and drinking habits. Researchers additionally sampled the subjects' DNA. In a 10-year follow-up period, around 14,000 people in the study died (the leading causes of death were cancer, cardiovascular disease and
respiratory diseases). The researchers found that the more cups of coffee people drank, the less likely they were to die during the study period. Though there were slight differences among the
types of coffee people drank, the results generally held true for instant, ground and decaf coffee. That decaf coffee was associated with longevity "suggest that the many other compounds in coffee,
besides caffeine, may be responsible," Loftfield told Live Science. When the researchers looked at the participants' genetic data, they identified four gene variations that were known to be associated with caffeine
more than 8 cups a day, was linked with a lower risk of death within a 10-year follow-up period. However, the researchers stressed that the study only found an association with
coffee and longevity and didn't prove that coffee leads to a longer life. "Although these findings may reassure coffee drinkers, these results are from an observational study and should be interpreted
cautiously," said lead study author Erikka Loftfield, a research fellow at the National Cancer Institute (NCI). In the study, published today (July 2) in the journal JAMA Internal Medicine, Loftfield and
her team at the NCI analyzed data from nearly 500,000 people who took part in the U.K. Biobank study. That project gathered health information from more than 9 million people. As
a part of the Biobank study, people were asked how many cups of coffee they drank daily, including decaf. The participants also answered questions about their general health, education, and smoking
and drinking habits. Researchers additionally sampled the subjects' DNA. In a 10-year follow-up period, around 14,000 people in the study died (the leading causes of death were cancer, cardiovascular disease and
respiratory diseases). The researchers found that the more cups of coffee people drank, the less likely they were to die during the study period. Though there were slight differences among the
types of coffee people drank, the results generally held true for instant, ground and decaf coffee. That decaf coffee was associated with longevity "suggest that the many other compounds in coffee,
besides caffeine, may be responsible," Loftfield told Live Science. When the researchers looked at the participants' genetic data, they identified four gene variations that were known to be associated with caffeine
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