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The latest recommendations were not to exceed 4 cups of coffee a day. Beyond this figure, the negative effects of this stimulant would appear. A new study by researchers at the National Cancer Institute (NCI), however, puts this figure in question. In fact, drinking coffee, up to 8 cups a day, would be associated with a lower risk of death. The details of their study were published in the journal JAMA International Medicine.
Scientists analyzed data from nearly 500,000 people, aged 57 on average, who participated in the British Biobank study. This study had collected health information on more than 9 million people. Respondents had to say how many cups of coffee they drank per day (even if it was decaffeinated), describe their overall health, education, and smoking and drinking habits. DNA samples of the volunteers were also recovered
Effects even without caffeine!
These people were followed over 10 years, during which 14,000 participants died (out of 500,000). The main causes were cancer, cardiovascular and respiratory diseases. The researchers found that the more people drank coffee, the lower the risk of dying during the study period. These results are valid whether it is ground coffee, instant or decaffeinated. "These results suggest that the many other coffee compounds, besides caffeine, could be responsible," said Erikka Loftfield, lead author of the study, at Live Science.
By the way, when researchers looked at the data Participants identified four genes known to be associated with caffeine metabolism, ie how the body assimilates caffeine. Previous studies have suggested that people with these gene variations may be at higher risk for cardiovascular disease. But in this new study, scientists found no connection between these variations and the risk of death of a person during the study period.
A correlation and not a causality
The researchers point out that the study only found an association with coffee and longevity, but did not prove that coffee leads to a longer life. "While these findings may reassure coffee drinkers, they come from an observational study and should be interpreted with caution," said Erikka Loftfield. This does not mean that one should increase one's consumption of coffee.
In fact, only 10,000 of the 500,000 participants drank at least 8 cups of coffee a day, and the risk of death compared to those who did not. consumed only 4, was only slightly higher. To summarize, this study provides additional evidence that coffee consumption can be part of a healthy diet. Only, of course, if we do not abuse cream and sugar!
Author: Jades Boches – TopSante
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