HOME >> MEDICINE >> NEWS
New buzz on coffee: It's not the caffeine that raises blood pressure

DALLAS, Nov. 19 People who enjoy the occasional decaf latte may be getting more of a lift than they know, scientists report in today's rapid access issue of Circulation: Journal of the American Heart Association.

Swiss scientists studying caffeine's effects in a small group of people report markedly elevated blood pressure and increased nervous system activity when occasional coffee drinkers drank a triple espresso, regardless of whether or not it contained caffeine.

Surprisingly, people who drank coffee on a regular basis showed increased stimulation of sympathetic nerve pathways but no increase in blood pressure.

This is the first time such disparities in reactions to coffee have been reported, says lead researcher Roberto Corti, M.D., a cardiologist at University Hospital in Zurich.

The results suggest that some unknown ingredient or ingredients in coffee not caffeine is responsible for cardiovascular activation, he explains. Coffee contains several hundred different substances.

"Until now we have attributed the cardiovascular effects of coffee to caffeine, but we found non-coffee drinkers given decaffeinated coffee also display these effects," Corti says. "This demonstrates how little we know about the effects of one of our most popular beverages and the most abundantly consumed stimulant worldwide.

"Coffee's cardiovascular safety remains controversial," he says. "The possible health hazards have been related to its main ingredient caffeine."

The researchers measured blood pressure, heart rate and muscle sympathetic nervous system activity (MSA) in 15 healthy volunteers (ages 27 to 38) six habitual coffee drinkers and nine who either abstained or drank coffee only occasionally. Measurements were recorded before, during and after participants consumed a triple espresso, a decaf triple espresso or intravenous administration of the equivalent amount of caffeine, or a placebo. None of the subjects knew whether they
'"/>

Contact: Carole Bullock
214-706-1279
American Heart Association
18-Nov-2002


Page: 1 2 3

Related medicine news :

1. Small, frequent doses of caffeine best strategy for staying awake
2. New study: Small, frequent doses of caffeine best strategy for staying awake
3. Link between caffeine consumption, high blood pressure found in adolescents
4. Dietary supplements containing ephedra and caffeine may cause heart problems
5. UGA researchers find caffeine reduces muscle pain during exercise
6. Rutgers research shows caffeine may prevent skin cancer
7. Study points to potential role for caffeine in reducing the risk of Parkinsons disease
8. Hormone therapy controversy raises drug safety issues
9. NYU Child Study Center raises a record $3.4 million at Seventh Annual Child Advocacy Award Dinner
10. Heavy drinking raises the risk of early death after heart attack
11. Lord Sainsbury praises the work of the UKs Innovative Manufacturing Research Centres

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: New buzz coffee not the caffeine that raises blood pressure

(Date:4/23/2014)... National Institute of Arthritis and Musculoskeletal and Skin Diseases ... Ross Prize in Molecular Medicine, conferred by the Feinstein ... award will be given on June 9 at the ... scientific presentations by Dr. O,Shea and other prominent researchers. ... , The award, which includes a $50,000 prize from ...
(Date:4/23/2014)... LAFAYETTE, Ind. - Purdue University researchers have developed a ... living cell by using tiny gold particles with tails ... professor of agricultural and biological engineering, used gold nanoparticles ... known as BRCA1 messenger RNA splice variants, which can ... number of these mRNA splice variants in a cell ...
(Date:4/23/2014)... testosterone falls below normal levels are more likely to ... heart disease and type 2 diabetes. A new simple ... testing and possible treatment is described in an article ... publication from Mary Ann Liebert, Inc., publishers. The article ... Health website at http://www.liebertpub.com/jmh . ...
(Date:4/23/2014)... As evidence mounts showing the potential health benefits of ... people are taking supplements. And the chemical industry is ... supplements, health effects could deter growth, so the industry ... claims, according to the cover story in Chemical ... of the American Chemical Society. , Melody M. Bomgardner, ...
(Date:4/23/2014)... scientists led by a researcher from the Cancer Science ... of Singapore has identified the cancer specific stem cell ... possibility of developing new drugs for the treatment of ... research group, led by Dr Chan Shing Leng, Research ... time that a cancer-specific variant of a cell surface ...
Breaking Medicine News(10 mins):Health News:NIH scientist to receive Ross Prize in Molecular Medicine 2Health News:Gold nanoparticles help target, quantify breast cancer segments in a living cell 2Health News:Scientists identify cancer specific cell for potential treatment of gastric cancer 2Health News:Scientists identify cancer specific cell for potential treatment of gastric cancer 3
(Date:1/15/2014)... AARP Foundation today announced it has established a ... severe cold weather that has gripped much of the nation. ... need; so to support these emergency relief efforts AARP and ... could mean up to $500,000 in aid. The matching program ...
(Date:1/15/2014)... , January 15, 2014 Shire plc (LSE: SHP, ... Office of Fair Trading (OFT) approval condition to the announced tender ... VPHM).   As a result of the waiver, the ... to complete the tender offer on January 24, 2014 following the ...
(Date:1/15/2014)... 2014  In an unprecedented effort to curb the spread of "superbugs" ... transport vehicles, an advanced and portable UV germicidal lamp manufactured by ... time. In order to prevent EMS paramedics and ... West Palm Beach Fire Rescue is the first ...
Breaking Medicine Technology:AARP Foundation Establishes Winter Relief Fund for Older Adults Suffering from the Severe Cold Weather 2AARP Foundation Establishes Winter Relief Fund for Older Adults Suffering from the Severe Cold Weather 3Shire Waives OFT Condition Relating to the Acquisition of ViroPharma Inc. 2Shire Waives OFT Condition Relating to the Acquisition of ViroPharma Inc. 3Superbugs No Longer Ride In Rescue Vehicles 2
Cached News: