The researchers used data from the UK Biobank study, through which a large group of UK adults completed health questionnaires, underwent physical examinations and provided biological samples.
The researchers found longevity benefits associated with almost every level and type of coffee consumption.
The second main way in which the study builds upon past research is that it took into account mortality incidence with respect to genetic differences in participants' metabolizing of caffeine.
Amla is loaded with vitamin C that is known to build your body's defence mechanisms against diseases and infections. 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.
Erikka Loftfield, a research fellow at the National Cancer Institute and author of the study said that the main finding of the study was that people who drink two to three cups of coffee per day lowered their risk of death by around 12 percent when compared to people who did not drink coffee. So, the benefit of drinking more than 8 cups of coffee over around 4 may be small.
The results support the recommendations of the U.S. Dietary Guidelines Advisory Committee, which states consuming three to five cups of coffee per day, or 400 milligrams per day, of caffeine is not detrimental to healthy individuals. Those who drank decaffeinated coffee too were similarly protected the study noted.
The study was published Monday in the journal JAMA Internal Medicine. However the association with a lower risk of death was observed both for slow and fast metabolisers of caffeine. "The tastes may vary depending on how you drink the coffee; the chemical compounds that may be beneficial probably don't change as much, so regardless of how you drink coffee, you're probably going to get most of the benefits".
Coffee lovers around the world are enjoying their cup of brew a little bit more today. But those studies only looked at coffee drinking after disease occurrence and did not examine overall mortality risk, as the current paper did, Loftfield said. "Like so many plant foods", she said, "the coffee bean is brimming with polyphenols that, research suggests, confer health benefits, such as antioxidant, anti-inflammatory, anti-cancer, anti-diabetes and antihypertensive properties". So the next time someone says they're trying to limit their coffee consumption, you can tell them not to worry about it.