"For example, prior studies have suggested that variants in CYP1A2, (a gene) encoding the enzyme responsible for more than 95 percent of caffeine metabolism, may alter associations of coffee drinking with cardiovascular-related outcomes, with slower caffeine metabolizers having higher risk of developing hypertension (high blood pressure) or having a myocardial infarction (heart attack) relative to their non-drinking counterparts, whereas faster caffeine metabolizers who drink coffee are at no or lower risk of these outcomes".
"These findings suggest the importance of non caffeine constituents in the coffee-mortality association and provide further reassurance that coffee drinking can be a part of a healthy diet".
The researchers (who, by the way, are federal scientists, not from anything like the Starbucks Institute for Coffee Research) say there is data on diet about some of the study participants that could be mined to parse apart the difference between people who have, say, cappuccinos or lattes or espressos. But overall, "coffee drinkers were about 10 percent to 15 percent less likely to die than abstainers during a decade of follow-up", according to an Associated Press report on the study.
Coffee contains antioxidants, substances that inhibit oxidation, especially those used to counteract the deterioration of stored food products. There are plenty of personal sensitivities to coffee and caffeine.
The study of almost half-a-million British adults, published yesterday in the JAMA Internal Medicine journal, showed that coffee drinkers had a slightly lower risk of death over 10 years than abstainers.
CHICAGO Go ahead and have that cup of coffee, maybe even several more.
As a part of the Biobank study, people were asked how many cups of coffee they drank daily, including decaf.
That doesn't mean people should dramatically up their coffee intake, though: There isn't enough data to change the guidelines to include more cups of coffee, Loftfield said. "But if they don't drink coffee, these findings don't say to start drinking it", Loftfield said.
Another study, conducted by the Harvard School of Public Health, found that women who drank four or more cups of coffee were 20 percent less likely to suffer from depression.
"We know that some people metabolize caffeine quite slowly and are less tolerant of the apparent physical affects of caffeine, which of course comes from many sources other than coffee". Coffee-drinkers fared better than people who did not drink coffee.
And she notes that it's a rare treat when there's something that feels good and actually is good for us.
A cup of coffee at a cafe in Los Angeles, as seen on March 29. If there were a big study on fruits and vegetables lowering the risk of dying, we'd all just shrug, she said. The results suggested that people who drank two to five cups of coffee in a day were about 12% less likely to die than non-coffee-drinkers over the 10-year time period in the study.
During the period of the study, over 14,000 participants died.
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