Nothing can be all good, and there is still information working against coffee -- in October, The Atlantic reported on a study from the health professionals cohort that suggested a link between excessive coffee consumption and glaucoma. "The current recommendation is that if somebody's not drinking coffee, you don't tell them to start," said Bhupathiraju.
But she agrees that drinking coffee, and more of it, does appear to be beneficial. The evidence remains overwhelmingly in coffee's favor. Yes, it was observational, but the study published in May in the New England Journal of Medicine looked at hundreds of thousands of men and women and found this bottom line result: people who drank coffee lived longer than those who didn't.
And the more they drank, the longer they lived. If you're into that sort of thing.