![]() The rest gave information on coffee drinking once, at the start of the study. Neither were folks at diet extremes - too many or too few calories per day. ![]() People who already had heart disease, a stroke or cancer weren't included. The new one began in 1995 and involved AARP members ages 50 to 71 in California, Florida, Louisiana, New Jersey, North Carolina, Pennsylvania and Atlanta and Detroit. He had no role in this study but helped lead a previous one that also found coffee beneficial. Frank Hu of the Harvard School of Public Health. So it can't prove cause and effect.īut with so many people, more than a decade of follow-up and enough deaths to compare, "this is probably the best evidence we have" and are likely to get, said Dr. Like most studies on diet and health, this one was based strictly on observing people's habits and resulting health. The results are published in Thursday's New England Journal of Medicine.Ĭareful, though - this doesn't prove that coffee makes people live longer, only that the two seem related. The study was done by the National Institutes of Health and AARP. Once researchers took those things into account, a clear pattern emerged: Each cup of coffee per day nudged up the chances of living longer. ![]() But they also tended to smoke, drink more alcohol, eat more red meat and exercise less than non-coffee-drinkers. There is evidence that coffee can raise LDL, or bad cholesterol, and blood pressure at least short-term, and those in turn can raise the risk of heart disease.Įven in the new study, it first seemed that coffee drinkers were more likely to die at any given time. It's not that earlier studies were wrong. The most widely studied ingredient - caffeine - didn't play a role in the new study's results. Coffee contains a thousand things that can affect health, from helpful antioxidants to tiny amounts of substances linked to cancer.
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