Drinking more than three cups of coffee a day may place you at no greater risk of high blood pressure than the occasional cup, according to a recent analysis of six observational studies. The studies showed that people who drink one to three cups of coffee a day have slightly elevated blood pressure, but those who drink more than three cups a day do not.

How might drinking more coffee be less hazardous? One possibility: Coffee is high in potassium, which lowers blood pressure—so the more you drink, the more protection you may be afforded from coffee's hypertensive effect.

Source: American J. of Clinical Nutrition, vol. 93, p. 1212; Prepared by the Editors of The Johns Hopkins Medical Letter: Health After 50

Publication Review By: the Editorial Staff at Healthcommunities.com

Published: 07 Jul 2013

Last Modified: 21 Jan 2015