In May 2018 researchers from Spain published their overview on the effect of coffee consumption on cardiovascular disease and mortality. They stated that when compared to those not consuming coffee, healthy individuals who regularly consume 3-5 cups of coffee per day appear to have a 15% reduction in the risk of cardiovascular disease, and that a higher consumption has not been linked to any increased risk. Moreover, in comparison to no coffee consumption, a regular intake of 1-5 cups per day is associated with a lower risk of premature death. It has also been noted that in individuals who have already suffered a cardiovascular event, regular coffee consumption does not appear to increase the risk of a recurrence of the event or death. However, hypertensive patients with uncontrolled blood pressure should avoid consuming large doses of caffeine.
Rodríguez-Artalejo F, López-García E. Coffee Consumption and Cardiovascular Disease: A Condensed Review of Epidemiological Evidence and Mechanisms. J Agric Food Chem. 2018 May 30;66(21):5257-5263