Moderate coffee consumption offers protection against heart failure
While current American Heart Association heart failure prevention guidelines warn against habitual coffee consumption, some studies propose a protective benefit, and still others find no association at all. Amidst this conflicting information, research from Beth Israel Deaconess Medical Center attempts to shift the conversation from a definitive yes or no, to a question of how much.
"Our results did show a possible benefit, but like with so many other things we consume, it really depends on how much coffee you drink," says lead author Elizabeth Mostofsky, MPH, ScD, a post-doctoral fellow in the cardiovascular epidemiological unit at BIDMC. "And compared with no consumption, the strongest protection we observed was at about four European, or two eight-ounce American, servings of coffee per day."
Data was analyzed from five previous studies four conducted in Sweden, one in Finland that examined the association between coffee consumption and heart failure. The self-reported data came from 140,220 participants and involved 6,522 heart failure events.
In a summary of the published literature, the authors found a "statistically significant J-shaped relationship" between habitual coffee consumption and heart failure, where protective benefits begin to increase with consumption maxing out at two eight-ounce American servings a day. Protection slowly decreases the more coffee is consumed until at five cups, there is no benefit and at more than five cups a day, there may be potential for harm.
It's unclear why moderate coffee consumption provides protection from heart failure, but the researchers say part of the answer may lie in the intersection between regular coffee drinking and two of the strongest risk factors for heart failure diabetes and elevated blood pressure.
"There is a good deal of research showing that drinking coffee lowers the risk for type 2 diabetes, says senior author Murray Mittleman, MD, DrPH, a physician in the Cardiovascular Institute at Beth Israel Deaconess Medical Center, an Associate Professor of Medicine at Harvard Medical School and director of BIDMC's cardiovascular epidemiological research program. "It stands to reason that if you lower the risk of diabetes, you also lower the risk of heart failure."
There may also be a blood pressure benefit. Studies have consistently shown that light coffee and caffeine consumption are known to raise blood pressure. "But at that moderate range of consumption, people tend to develop a tolerance where drinking coffee does not pose a risk and may even be protective against elevated blood pressure," says Mittleman.
This study was not able to assess the strength of the coffee, nor did it look at caffeinated versus non-caffeinated coffee.
"There is clearly more research to be done," says Mostofsky. "But in the short run, this data may warrant a change to the guidelines to reflect that coffee consumption, in moderation, may provide some protection from heart failure."
Provided by Beth Israel Deaconess Medical Center
- Coffee or tea: Enjoy both in moderation for heart benefits Jun 18, 2010 | not rated yet | 0
- Coffee may protect against endometrial cancer Nov 22, 2011 | not rated yet | 0
- Coffee does not increase the risk of hypertension: new study says Apr 25, 2011 | not rated yet | 0
- Coffee may cause a heart attack danger Aug 16, 2006 | not rated yet | 0
- Coffee seen to protect against cirrhosis Jun 13, 2006 | not rated yet | 0
- Motion perception revisited: High Phi effect challenges established motion perception assumptions Apr 23, 2013 | 3 / 5 (2) | 2
- Anything you can do I can do better: Neuromolecular foundations of the superiority illusion (Update) Apr 02, 2013 | 4.5 / 5 (11) | 5
- The visual system as economist: Neural resource allocation in visual adaptation Mar 30, 2013 | 5 / 5 (2) | 9
- Separate lives: Neuronal and organismal lifespans decoupled Mar 27, 2013 | 4.9 / 5 (8) | 0
- Sizing things up: The evolutionary neurobiology of scale invariance Feb 28, 2013 | 4.8 / 5 (10) | 14
The idea behind a reverse shock
2 hours ago So in a supernova explosion for example (5th slide) http://www.astro.princeton.edu/~burrows/classes/541/blastwavesChisari.pdf Ambient medium is...
Guass's Law for a charge distribution
3 hours ago First, this is not a homework question, just something I've been confused about for some time. I understand how to use Guass's law in many ways but...
3 hours ago Hello :) i'm new to this forum, so excuse me for my straightforwardness ;) I'm working on my bachelor work and i can't find a solution. I'm writing...
siphon and bernouli theorum
5 hours ago 1. I found this diagram on book but there weren't any description.can someone tell me, what its trying to tell specially by those two red lines...
Hot gas expansion rate into outer space
5 hours ago Good Morning Sirs, it seems to be surprisingly hard to get the numbers of a mystery: How fast expand hot rocket exhaust gases into empty space? ...
Magnetic field lines through copper
10 hours ago Hello. Assume an electron gun, as in CRT, made of plumbing copper instead of glass. Using magnetic scanning coils to move electron beam. Will the...
- More from Physics Forums - Classical Physics
More news stories
Heart failure accelerates the aging process and brings on early andropausal syndrome (AS), according to research presented today at the Heart Failure Congress 2013. AS, also referred to as male 'menopause', was four times ...
Cardiology 8 hours ago | not rated yet | 1
Mortality and length of stay are highest in heart failure patients admitted in January, on Friday, and overnight, according to research presented today at the Heart Failure Congress 2013. The analysis of nearly 1 million ...
Cardiology 8 hours ago | not rated yet | 0
Coenzyme Q10 decreases all cause mortality by half, according to the results of a multicentre randomised double blind trial presented today at Heart Failure 2013 congress. It is the first drug to improve heart failure mortality ...
Cardiology 9 hours ago | 5 / 5 (2) | 5
Transcatheter aortic valve implantation (TAVI) is effective and safe in Asian patients, according to early experience based on first results from a multicentre Asian registry reported at EuroPCR 2013.
Cardiology May 24, 2013 | not rated yet | 0
Routinely measuring fractional flow reserve (FFR) using pressure wire assessment during coronary angiography for diagnosis of chest pain leads to significant changes in the management of one in four patients, according to ...
Cardiology May 24, 2013 | not rated yet | 0
(HealthDay)—Animals make great companions for senior citizens, but elderly people who always drive with a pet in the car are far more likely to crash than those who never drive with a pet, researchers have ...
54 minutes ago | not rated yet | 0
(AP)—Department of Justice lawyers have again asked a federal appeals court in New York to delay lifting age restrictions and prescription requirements on an emergency contraceptive popularly known as the morning-after ...
8 hours ago | not rated yet | 0
(Medical Xpress)—A research team, led by Jeremy Barr, a biology post-doctoral fellow, unveils a new immune system that protects humans and animals from infection.
May 20, 2013 | 4.8 / 5 (30) | 9 |
Until now, little was scientifically known about the human potential to cultivate compassion—the emotional state of caring for people who are suffering in a way that motivates altruistic behavior.
May 22, 2013 | 5 / 5 (4) | 6 |
Women at a particular stage in their monthly menstrual cycle may be more vulnerable to some of the psychological side-effects associated with stressful experiences, according to a study from UCL.
May 24, 2013 | 4 / 5 (4) | 4 |
Salamanders' immune systems are key to their remarkable ability to regrow limbs, and could also underpin their ability to regenerate spinal cords, brain tissue and even parts of their hearts, scientists have ...
May 20, 2013 | 4.9 / 5 (7) | 5 |