Fresh ground coffee may boost longevity, study finds

Fresh ground coffee may boost longevity, study finds

"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 a survey of over a half-million people in the United Kingdom, researchers found that people who drank up to, or more than, eight cups of coffee per day had a lower risk of early death compared to those who didn't. The mean age of the participants was 57 years (range, 38-73 years); 271 019 (54%) were female, and 387 494 (78%) were coffee drinkers. For instance, a 2015 review of 12 studies showed coffee had a protective effect against depression - more than most teas.

For those who drank six to seven cups a day, the risk was cut 16 percent, Loftfield said.

During the next decade, 14,225 participants died, mostly of cancer or heart disease.

Is coffee good or bad?

Experts say that coffee is beneficial for health not just because of the caffeine but because of other compounds and antioxidants that they contan.

A new study provides more good news for coffee lovers.

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So is all of the glowing research around coffee consumption scientifically sound, or yet another case of over-hyped public health reporting lacking nuance? A 2014 study found that there was zero evidence of dehydration with moderate daily coffee intake. The findings were true among all coffee drinkers, even those who might be more sensitive to the effects of caffeine.

While caffeine in large amounts can kill, it takes huge amounts of coffee to deliver a lethal dose - more than 20 cups at once.

So, get that extra cup of coffee.

"Coffee makes you happy, it gives you something to look forward to in the morning", he said. For the current study, the researchers analyzed information provided by about 500,000 people, who answered questions about their coffee consumption, smoking and drinking habits, health history and more. "Also, the women with the highest caffeine intakes were older, more likely to be poorly educated or obese prior to pregnancy, and to smoke during pregnancy".

Other studies have suggested that substances in coffee may reduce inflammation and improve how the body uses insulin, which can reduce the chance of developing diabetes.

Researchers accessed genetic data for 403,816 of the 498,134 study participants to create 2 genetic "caffeine metabolism" scores (CMSG) by "adding the number of alleles of single base changes, or single nucleotide polymorphisms (SNPs), previously associated with blood caffeine metabolite levels, and the map near genes with plausible roles in caffeine metabolism". But it turns out that even slow caffeine metabolizers seem to share the death-risk-reduction connected to coffee drinking.

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