Navigation Links
Coffee Drinking and Caffeine Associated With Reduced Risk of Hospitalization for Heart Rhythm Disturbances

SAN FRANCISCO, March 2 /PRNewswire/ -- Coffee drinkers may be less likely to be hospitalized for heart rhythm disturbances, according to a new study by the Kaiser Permanente Division of Research in Oakland, Calif. The researchers, who note the findings may be surprising because patients frequently report palpitations after drinking coffee, are presenting the study at the American Heart Association's 50th Annual Conference on Cardiovascular Disease Epidemiology and Prevention in San Francisco on March 5, 2010.

While it has been established that very large doses of caffeine, the most active ingredient in coffee, can produce rhythm disturbances, there has been limited epidemiologic research about the caffeine doses people take. Previous data from a population study in Denmark compared heavy to light coffee drinkers with respect to risk of atrial fibrillation, the most common major rhythm disturbance, and found no statistically significant difference. This research presentation is believed to be the first large, multiethnic population study to look at all major types of heart rhythm disturbance, the researchers said.

The researchers followed 130,054 men and women and found that those who reported drinking four or more cups of coffee each day had an 18 percent lower risk of hospitalization for heart rhythm disturbances.  Those who reported drinking one to three cups each day had a 7 percent reduction in risk, according to Arthur Klatsky, MD, the study's lead investigator and a senior consultant in cardiology at Kaiser Permanente Division of Research in Oakland, Calif.

"Coffee drinking is related to lower risk of hospitalization for rhythm problems, but the association does not prove cause and effect, or that coffee has a protective effect," Klasky said. Other explanations for the association might include other traits of coffee drinkers such as exercise or dietary habits. Additionally, some people with heart rhythm problems often are not hospitalized.

"However, these data might be reassuring to people who drink moderate amounts of coffee that their habit is not likely to cause a major rhythm disturbance," Klatsky said.  While this report is not sufficient evidence to say that people should drink coffee to prevent rhythm problems, it supports the idea that people who are at risk for rhythm problems, or who have rhythm problems, do not necessarily need to abstain from coffee, emphasized Klatsky.

The long-term observational study involved 130,054 men and women, 18 to 90 years old, with the majority less than 50 years old.  About 2 percent (3,317) were hospitalized for rhythm disturbances; 50 percent of those were for atrial fibrillation, the most common heart rhythm problem.  The 18 percent reduction in risk was consistent among men and women, different ethnic groups, smokers and nonsmokers. It also was similar for various rhythm problems such as paroxysmal supraventricular tachycardia, atrial flutter, and atrial fibrillation.

Fourteen percent of the people in the study drank less than one cup of coffee a day; 42 percent drank one to three cups of coffee a day; and 17 percent reported drinking four cups or more each day. Only 27 percent of the people in the study were not coffee drinkers.

While emphasizing that these observational data do not establish causality and a protective mechanism is unclear, researchers speculate that moderate doses of caffeine may affect rhythm disturbances by antagonism of adenosine, a nucleoside compound widely distributed in the body.  In the heart adenosine has several effects on conduction of electrical impulses, muscle cell energetics, and heart muscle cell recovery that might predispose to rhythm problems. Caffeine antagonizes adenosine effects by blocking its chemical sites of action.

The researchers examined hospitalization data by elapsed time after the initial examination.  For hospitalization within 10 years, the reduction in hospitalizations for people who consumed four cups of coffee or more each day reached 28 percent.

The researchers also studied persons in the group with or without symptoms or history of heart and respiratory disease.  For both groups, consuming four cups of coffee daily appeared to be associated with fewer hospitalizations for rhythm disturbances.

For more information on studies related to coffee consumption, go to:

Co-authors are: Amatul Hasan, MD; Cynthia Morton, MD; Mary Anne Armstrong, MA, biostatistician; and Natalia Udaltsova, PhD, programmer.  Author disclosures are on the abstract. This study was supported by a grant from the Kaiser Foundation Research Institute and the Robert Wood Johnson Foundation.

About the Kaiser Permanente Division of Research (

The Kaiser Permanente Division of Research conducts, publishes, and disseminates epidemiologic and health services research to improve the health and medical care of Kaiser Permanente members and the society at large. It seeks to understand the determinants of illness and well-being and to improve the quality and cost-effectiveness of health care. Currently, DOR's 500-plus staff is working on more than 250 epidemiological and health services research projects.

About Kaiser Permanente

Kaiser Permanente is committed to helping shape the future of health care. We are recognized as one of America's leading health care providers and not-for-profit health plans. Founded in 1945, our mission is to provide high-quality, affordable health care services to improve the health of our members and the communities we serve. We currently serve 8.6 million members in nine states and the District of Columbia. Care for members and patients is focused on their total health and guided by their personal physicians, specialists and team of caregivers. Our expert and caring medical teams are empowered and supported by industry-leading technology advances and tools for health promotion, disease prevention, state-of-the art care delivery and world-class chronic disease management. Kaiser Permanente is dedicated to care innovations, clinical research, health education and the support of community health. For more information, go to:

SOURCE Kaiser Permanente

Back to top



SOURCE Kaiser Permanente
Copyright©2010 PR Newswire.
All rights reserved

Related medicine news :

1. VIDEO from Medialink and the Flower Promotion Organization: A Cup of Coffee and Fresh Cut Flowers to Start the Day
2. Pura Vida Coffee and Compass Group Announce Strategic Partnership
3. P&G Reports $0.98 EPS, Up 17%, on 9% Sales Growth; Announces Plan to Create Stand-Alone Coffee Company
4. Healthy Coffee International, Inc. Establishes Healthy Coffee USA, Inc. as Its Marketing Arm
5. Brews Up New Uses for Coffee That Will Perk You Up in Recognition of Marchs Caffeine Awareness Month
6. Healthy Coffee USA Launches Founders Club
7. Religious Leaders Join The Balm In Gilead to Support The Big Coffee Project, to Help Fight HIV/AIDS in the United States and in Africa
8. Torrefacto-roasted coffee has higher antioxidant properties
9. Wendell Tyler, of San Francisco 49ers Super Bowl XIX Fame, Joins Healthy Coffee USAs Founders Club
10. PEMCO Insurance and Tullys Coffee Team Up to Make Coffee Orders Count - For Childrens Hospital
11. MLM Expert and Start-Up Specialist Jim Clayton Joins Healthy Coffee USA
Post Your Comments:
(Date:11/30/2015)... DE (PRWEB) , ... November 30, 2015 , ... ... guest lecturer at a University of Delaware Accounting and Management of Information Systems ... software solutions for mid-market businesses. Sommer will speak at before student in the ...
(Date:11/30/2015)... ... November 30, 2015 , ... Cycling, running, and walking are regular Sunday activities ... morning of February 28, 2016. , That’s when the 7th annual ANF Group ... to help children and families at Joe DiMaggio Children’s Hospital. , The ...
(Date:11/30/2015)... ... November 30, 2015 , ... HemoTreat™ has announced that the ... ointment to its website. , “Our goal is simple:” says Michael Blasco, HemoTreat’s ... the comparison chart and ingredient list allows our customers to quickly see why, ...
(Date:11/30/2015)... ... , ... At Grand Dental PC, their priority is to deliver quality care ... problems, you need to turn to a dentist who listens and responds; an experienced ... friendly dentist who counsels you on the best ways to maintain and improve your ...
(Date:11/30/2015)... (PRWEB) , ... November 30, 2015 , ... Dr. Seth ... three office locations, patients can visit Dr. Margulies to experience the best available orthodontic ... hold the title of "NJ Top Dentist"! , Orthodontics is the branch of dentistry ...
Breaking Medicine News(10 mins):
(Date:11/30/2015)... , November 30, 2015 North America ... is expected to grow at a CAGR of 7.6% from 2015 ... valued at USD 135.6 million in 2014, and is expected to ... --> According to the new Market Research Report "North America ... By End User (Hospitals, ambulatory care, others) - Analysis And Forecast ...
(Date:11/30/2015)... , November 30, 2015 /PRNewswire/ ... --> adds a ... for 2010 - 2015 with comprehensive ... a range of deal types, such ... strategic alliances. ...
(Date:11/30/2015)... Nov. 30, 2015  Kevin Smith has been ... a global pioneer in wireless monitoring of vital ... MA , Mr. Smith will be responsible ... commercial strategy.  He will also directly oversee partnering ... clinical evidence for SensiumVitals, the first early warning ...
Breaking Medicine Technology: