It would be premature to recommend more of the stuff!
Two very large cohort studies found those who drank more coffee experienced lower death rates than nonconsumers. The European EPIC study followed over 500,000 people for 16 years, and the Multiethnic Cohort study followed 200,000, also for 16 years. However, editorialists have cautioned it would be premature to recommend we drink more, pointing out that many confounders such as economic level were not taken into account. Higher income leads to higher coffee consumption and better health care.
PositiveTip: It is probably best not to rush to the coffee pot until further studies!